How you handle a complaint often matters more than the original problem. Done well, complaint handling turns an angry customer into a loyal one — and it's a skill every employer tests.
A complaint is a gift
A customer who complains is giving you a chance to fix it and keep them — most unhappy customers just leave silently and tell others. Reframe complaints as free, valuable feedback, not personal attacks. This mindset keeps you calm and constructive.
The LAST model
A simple, powerful framework for any complaint:
- Listen — let them explain fully without interrupting; hear the emotion and the facts.
- Apologise — sincerely, for the situation and how it made them feel (even if it wasn't your fault: "I'm sorry this has happened").
- Solve — fix it, or clearly explain what you'll do and by when.
- Thank — thank them for raising it and for their patience.
The HEARD model (for high emotion)
When a customer is very upset, HEARD adds depth:
- Hear them out fully.
- Empathise with how they feel.
- Apologise sincerely.
- Resolve the issue.
- Diagnose the root cause so it doesn't recur (and feed it back internally).
De-escalating an angry customer
- Stay calm — don't take it personally or match their tone; your calm is contagious.
- Let them vent briefly — interrupting an angry customer adds fuel.
- Acknowledge and apologise — "You're absolutely right to be frustrated."
- Lower your pace and volume — it naturally brings theirs down.
- Focus on solving, not defending or blaming.
- Use their name and "we"/"let's" to build a team-against-the-problem feeling.
When to escalate
Escalate when the issue is beyond your authority, the customer requests it, it's a safeguarding/legal/serious matter, or de-escalation isn't working. Escalating well (with a clear handover) is a strength, not a failure. Abusive behaviour: stay professional, follow your policy on warnings.
Put it to work
Memorise LAST, then run it in the Difficult Complaint lab against a realistic angry customer.