Neidio i’r llywio Neidio i’r cynnwys Neidio i’r troedyn

Letter to complain about a phone, TV or internet bill

Mae’r cyngor hwn yn berthnasol i Cymru

Use this letter template to complain to your supplier about a problem with a bill for your phone, TV or internet service.

It should help the trader understand your point of view and their legal obligation to sort out the problem.

You can send the letter by post or copy the text into an email. If you’d prefer to talk to the trader on the phone or in person you could read it out to them.

To find out more about when you should use this letter, see our advice on how to dispute a phone, internet or TV bill.

A oedd y cyngor hwn yn fuddiol?
Pam nad oedd y cyngor yn fuddiol?
A oedd y cyngor hwn yn fuddiol?

Diolch i chi, cyflwynwyd eich adborth.