---
title: "Write a broadband complaint backed by evidence | Kilobat"
url: "https://kilobat.app/broadband/complaint-letter"
description: "A clear message helps your provider understand what happened and what you are asking it to investigate."
---

Kilobat broadband guide

# Write a broadband complaint backed by evidence

A clear message helps your provider understand what happened and what you are asking it to investigate.

## What to check

Record dates, symptoms, results, test conditions and exact plan wording. Keep prior support conversations and reference numbers. Describe what you observed without asserting an unverified cause.

## What to do next

Ask the provider to investigate and give you a complaint reference. If it remains unresolved, check the official complaint route for your location.

## Official source

[Ofcom: making a complaint](https://www.ofcom.org.uk/phones-and-broadband/service-quality/adr-schemes)

Sources checked 3 November 2026. Rules, contracts and complaint routes can change. Check official guidance for your circumstances.

## Get help with your report

Send us a reviewed Kilobat support report. We can help you understand the measurements, choose a next test and prepare a message for your provider.

[Learn about report review →](https://kilobat.app/network-report-review)

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