How to Handle Customer Complaints
Handling customer complaints isn't a "contact centre problem." Complaints are usually the outcome of something breaking elsewhere in the business — policy, product, delivery, billing, training or communication.
This 6-step guide gives you a simple frontline flow that works across phone, email, chat, social and face-to-face. It's built to help you de-escalate, resolve fairly, and protect both customers and staff.
Learn the steps, then build the system behind them — because good complaints handling is repeatable, not a matter of mood.
Why it matters
Customers have long memories and short fuses when costs and pressures rise. A poor complaint experience travels fast; a well-handled one can win a customer for life.
A system, not a mood
The six steps only work when they sit on a consistent back-end: a shared framework, a proper complaints log, clear escalation, and a habit of closing the loop.
Listening isn't tolerating abuse
Hearing a customer out is step one — but it never means accepting abuse. Respectful boundaries and a staff-safety approach sit alongside every step here.
Why Handling Customer Complaints Matters More Than Ever
Every business deals with dissatisfied customers. When costs rise and delivery or staffing pressures hit, frustration climbs — and small issues escalate faster.
This has always been true: customers have long memories, and poor experiences travel quickly.
"Your most unhappy customers are your greatest source of learning."
— Bill Gates
Customer experience research consistently shows that after a poor service experience:
They don't come back
Customers are far less likely to return after a badly handled complaint — and winning a new customer costs far more than keeping one.
They tell everyone
Negative experiences are shared widely with friends and colleagues, and online reviews and social media amplify dissatisfaction rapidly.
Silence isn't safety
Only a very small proportion of unhappy customers take no action at all. Most act — you just don't always see it. A good complaint is the feedback you can see.
See the latest figures in the ACXPA Customer Experience Statistics.
Before You Start: Make Complaints Handling a System
The 6-step flow works best when it's supported by a consistent complaints "back-end." Without it, you're relying on individual goodwill — and trends stay invisible.
Use a consistent framework
So every staff member is aligned on what "good" looks like — and customers get the same fair treatment regardless of who answers.
Log complaints properly
Trends are invisible if complaints aren't captured and categorised consistently. The log is what turns individual gripes into root-cause insight.
Be clear on escalation
Staff need rules for when to escalate and how — so hard cases move quickly instead of stalling on the frontline.
Close the loop
Complaints should drive fixes, not just resolutions. If the root cause stays alive in the business, the same complaint keeps coming back.
Start with the toolkit
The ACXPA Complaints Handling Toolkit lives in the Complaints Handling Hub and turns the steps below into a repeatable, auditable process. Inside you'll find:
- A Complaints Logging Tool (Excel) that captures consistent data and supports AI-assisted trend exports — without a full case system.
- An Escalation Decision Tool to assess severity consistently and know when to escalate.
- The Complaints Handling Framework, a frontline handling guide, and the HEAT Model Cheat Sheet and HEAT Training Facilitator Guide.
- Ready-to-use templates — a customer commitment sign and a website complaints page.
How to Handle a Customer Complaint in 6 Steps
Whatever the channel, this is the flow. Each step is short on paper and hard under pressure — which is exactly why it helps to have them memorised.
Listen
The customer is concerned and wants to be heard. Give them space to explain what happened, and listen until you understand the issue clearly — because if you don't understand the problem, you can't solve it properly.
Boundary: listening never means tolerating abuse. If the customer crosses a line, use a respectful boundary and follow your safety approach. For the full method, see how to manage angry customers (the HEAT model).
Empathise
It sounds obvious, but it works: put yourself in the customer's shoes. Acknowledge the impact, and ask the questions you need to understand what a fair outcome looks like.
Empathy statements help — as long as they're delivered with genuine intent, not as a script. See empathy statements for customer service.
Thank them for raising it
The customer could have walked away and told everyone else instead. They've given you a chance to fix it.
Thank them — not as a gimmick, but as genuine recognition that feedback is a gift, even when it's delivered poorly.
Solve it with the customer, not to them
Work with the customer to shape a solution. People are far more accepting of outcomes they feel involved in — especially when you explain the constraints clearly (policy, timeframes, approvals).
Best practice: confirm what "resolved" looks like before you lock in the final action.
Deliver on your promise
Once you agree on the outcome, execute it fast and exactly as promised. Fail here and you undo every step before it.
Operational tip: if delivery depends on another team, set clear ownership and an internal due date — not "ASAP."
Follow up
Set a mechanism to follow up within an appropriate timeframe, to confirm the customer is satisfied and there's no lingering issue.
Follow-up is also where you prevent repeat complaints, capture the learning, and check whether the root cause is still alive in the business.
"A complaint is a chance to turn a customer into a lifelong friend."
— Richard Branson
Where Complaints Handling Goes Wrong
Most complaint failures aren't about attitude — they're predictable breakdowns in the flow above. These are the ones to train out first.
- Jumping to a solution before listening Offering a fix before you understand the problem tells the customer you weren't really listening — and often solves the wrong thing, creating a second complaint.
- Defending the business instead of hearing the person "That's our policy" early in a complaint reads as a wall. Acknowledge the impact first; explain constraints later, once the customer feels heard.
- Over-promising to end the call Agreeing to something you can't deliver just to de-escalate in the moment guarantees a bigger complaint when the promise breaks.
- No follow-up Resolving the call but never checking back leaves the customer unsure it's really fixed — and leaves the root cause alive to complain about again.
- Not logging it A complaint solved but never recorded is a lesson thrown away. Without the log, ten of the same complaint look like ten unrelated bad days.
Frequently Asked Questions
How do you handle a customer complaint?
Follow a consistent flow: listen fully, empathise with the impact, thank the customer for raising it, solve the problem with them, deliver on exactly what you promised, then follow up to confirm it's resolved.
The steps matter less than doing them the same way every time, supported by a proper complaints log and clear escalation rules.
What are the steps in handling customer complaints?
The ACXPA 6-step flow is: 1) Listen, 2) Empathise, 3) Thank them for raising it, 4) Solve it with the customer, 5) Deliver on your promise, 6) Follow up.
It works across phone, email, chat, social and face-to-face because the sequence — understand, acknowledge, resolve, confirm — is the same on every channel.
How do you handle an angry or abusive complaint?
Listen and empathise to de-escalate, but set a respectful boundary the moment a customer becomes abusive — hearing someone out never means accepting abuse.
The HEAT model gives you the de-escalation structure, and your staff-safety approach governs when to end the contact. See also dealing with anger and abuse in customer service.
How do you respond to a complaint in writing or email?
The same six steps apply, but in writing you demonstrate listening through specifics — quote the dates, order numbers and details the customer gave, rather than a generic "we're sorry for any inconvenience."
Acknowledge the impact, set out the resolution and timeframe clearly, and confirm you'll follow up. Vague, corporate wording is the written-channel version of not listening.
Why is handling customer complaints important?
Because most unhappy customers don't complain — they just leave and tell others. A customer who complains is giving you a rare, visible chance to fix the problem and keep them.
Handled well, complaints also surface the root causes breaking elsewhere in the business, turning friction into insight.
What's the difference between a complaint and feedback?
A complaint is feedback with something at stake — the customer has been let down and wants it put right. All complaints are feedback, but not all feedback is a complaint.
Treating both as valuable (and logging both) is what lets you spot patterns before they become widespread problems.
Need help with complaints handling?
Find complaints, quality and CX specialists in the ACXPA Supplier Directory.
Browse the full ACXPA Supplier Directory →Take This With You
Bookmark this page, save it to your phone, or share the six steps with your team.
Bookmark the 6 steps
Keep Listen → Empathise → Thank → Solve → Deliver → Follow Up handy for the next difficult complaint, on any channel.
Free download: HEAT Model Cheat Sheet
A frontline-ready reference for handling emotionally charged complaints with empathy and control — the de-escalation structure behind steps 1 and 2. Free to download, no membership needed.
Download the Cheat SheetGo deeper: 20 more tips
Our companion guide covers processes, procedures and KPIs for improving complaints handling across a whole business.
20 Complaints Management TipsThe words that work
Genuine empathy statements are what make steps 1 and 2 land. Grab a bank of them to adapt to your own voice.
Empathy StatementsFor Team Leaders and Managers
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Summary
Handling customer complaints well isn't about mistakes never happening — in the real world, the win is a simple, consistent method your team can execute under pressure.
The flow is the same on every channel: listen, empathise, thank the customer for raising it, solve it with them, deliver exactly what you promised, and follow up. Each step is easy to say and hard to do when a customer is upset — which is why it pays to have them memorised.
But train the skills and build the system: a clear framework, an escalation approach, and a structured complaints log that turns friction into insight. Resolutions fix today's problem; the log fixes tomorrow's.
"Good customer experience is by design, not by chance."
— Justin Tippett, ACXPA
Great article Justin. #1 & #2, listen & empathise are the key. When staff don’t have a method for complaint handling they often default to jumping into fix it mode, completely missing the customer’s emotional need which is to be heard and understood.
Thanks Simon, agree – super important component!
I agree @Simon, the basics of being a good human!
Really great tips on handling customer complaints. Thank you Justin.