← All letters

Broadband poor service complaint letter

Faults, slow speeds or no service? This formal broadband complaint asks your provider to fix it, credit your account and give you a reference, starting the 6-week clock for the free complaint scheme (CISAS or the Communications Ombudsman).

1. Add your details

Your details stay in your browser. Nothing you type here is sent to Bill Fighter or saved. Blank fields stay as [brackets] for you to fill in.

2. Copy, print or download

Tips

• Send it through your provider's complaints email, web form or post, and keep a copy with the date you sent it.
• Note the date: you can usually go to the free complaint scheme (CISAS or the Communications Ombudsman) after 6 weeks, or sooner with a deadlock letter.

Sources

• Ofcom: Telecoms price rises – what are your rights?
• Communications Ombudsman
• CISAS

Last checked 02/11/2026. This is a template with general information, not legal or financial advice. Check your own contract and the linked pages before you send it.

Other broadband letters

• Broadband price rise complaint letter
• Out-of-contract broadband complaint letter
• Broadband billing error complaint letter
• Letter to cancel your broadband