Letter to complain about energy back-billing
If you haven't had an energy bill in over a year, your supplier has to follow certain rules about how far back they bill you.
You should first read our guidance if you've not received a bill in a while.
If your supplier tries to bill you for more than they should, you can use this example letter to help you write a complaint.
If you need more detailed advice and guidance, contact the Citizens Advice Consumer Helpline.