Free template · For customer service teams

Complaint register format for customer service teams, with a free Excel template

A complaint register is the list of every complaint you receive and what happened to each one. Here is what to record, a sample entry, and a register you can download and start using today.

  • Columns that follow a complaint from receipt to follow-up
  • Drop-down lists for channel, type, priority, status and escalation level
  • A summary sheet that counts open complaints and days to resolve
  • Works in Excel and Google Sheets
Example entry · invented details

CR-0001 · Water purifier · No water output

  • Received 2 Nov, 10:30, on WhatsApp
  • Warranty In warranty · Priority High
  • Assigned Technician A on 2 Nov · target 4 Nov
  • Action Replaced inlet valve (part used: inlet valve)
  • Resolved 3 Nov · 1 day · customer informed 3 Nov

What is a complaint register?

A complaint register is a record, one row per complaint, of who complained, about what, through which channel, who is handling it, and how and when it was resolved.

Service businesses, dealers, service centres and manufacturers use it to make sure no complaint is lost and to see patterns, such as the same product failing again and again. It can be a paper register, a spreadsheet or a CRM. The information is the same; what changes is how easily you can keep it current and search it.

What a complaint register should record

Six groups of information. Together they answer: who, when, what, who owns it, what was done, and did we tell the customer.

1 · Who and when

  • Complaint number: a unique reference you can quote to the customer; never reuse one
  • Date and time received: starts the resolution clock
  • Channel: phone, WhatsApp, email, web, app or walk-in
  • Customer name, phone, email, location

2 · The product

  • Product, model, serial number
  • Purchase date
  • Warranty or AMC status: decides whether the visit is free

3 · The complaint

  • Complaint type: lets you group and count problems
  • Description: in the customer's own words
  • Priority: tells the team what to handle first

4 · Who is handling it

  • Assigned to and date assigned: a complaint with no owner is the one that gets lost
  • Target resolution date: makes late something you can measure
  • Status: open, assigned, in progress, waiting for part, resolved, closed

5 · What was done

  • Action taken
  • Spare parts used: shows repeat failures
  • Date resolved and days to resolve: your turnaround time

6 · Closing the loop

  • Escalation level: if and when it moved up
  • Customer informed on: the date you last updated them
  • Customer feedback and remarks

The free complaint register, ready to use

The Excel file has a 500-row register, drop-down lists so entries stay consistent, and a summary sheet that counts complaints by status and works out your average days to resolve.

Complaint register format in Excel with ticket number, date, channel, product, description, priority, assigned to and status columns

Summary sheet

Counts open, assigned, in progress, waiting-for-part, resolved, closed and re-opened complaints, shows total logged and average days to resolve, and counts complaints past their target date.

Complaint register summary sheet showing complaints by status and average days to resolve

How to use it

  • Delete the grey sample row, then log one complaint per row.
  • Fill Assigned to and Target resolution date the same day.
  • Update Status as the work moves; days to resolve calculates itself.
  • Change the drop-down lists under Data, then Data Validation, to match your own channels and complaint types.

How to keep a complaint register that works

1

Log it when it arrives

Whatever the channel. A register filled in later is a register that is wrong.

2

Give it an owner and a date

Assign it and set a target date the same day.

3

Update the status as work moves

Not at the end, when the detail has been forgotten.

4

Tell the customer at each step

Most escalations begin with a customer who has heard nothing.

5

Review weekly

Open complaints past their target date first, then repeats on the same product or customer.

6

Keep resolved complaints

They are how you spot patterns and faulty batches.

When a spreadsheet stops being enough

A register in Excel is a good start and works for a small team. It starts to strain when more people need to use it at once.

  • Several people log complaints at the same time.
  • Technicians need to see their own jobs.
  • You need a product's warranty status or past repairs in seconds.
  • Customers want to log complaints themselves, at any hour.

At that point the same register becomes tickets in a service CRM: each complaint has an owner, a status and a history, and the list is always current. The signs are in Outgrown spreadsheets and WhatsApp groups: 7 signs.

Simply C2's free Starter plan covers up to 10 users with no credit card. The customer complaint portal lets customers log complaints on your brand page or in the free app, and for a brand connected to Simply C2 CRM that creates the ticket in your CRM.

Frequently asked questions

What is a complaint register?

A record of every complaint received and how it was handled, one row per complaint.

What should a customer complaint register include?

At a minimum: complaint number, date, customer details, product, complaint description, who it is assigned to, status, and the date resolved. The groups above list a fuller set.

Is a complaint register mandatory?

It depends on your sector and contracts. Some regulated businesses and some service agreements require one. Check what applies to you; this page is a practical format, not legal advice.

How long should I keep complaint records?

Keep them at least as long as the warranty and any contract or statutory period that applies to you. Ask your adviser for the exact period.

Can I use Excel for a complaint register?

Yes. The free template on this page is an Excel file with drop-down lists and a summary sheet. It also opens in Google Sheets.

What is the difference between a complaint register and a complaint management system?

A register is the record. A complaint management system adds assignment, reminders, customer updates and reports on top of that record.

Outgrown the spreadsheet?

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