If you have a prepayment meter and it shows any error message, contact your energy supplier which must check it within three hours on working days, and four hours on weekends or holidays.
If you pay by direct debit, check whether your energy account is in credit, and decide if you want it refunded or wish to keep the balance to cover more expensive months.
If you don’t believe you’re using all of the energy you have been billed for, take a reading and a picture of the meter and send to your supplier.
suggests multiplying your annual usage in kWh for each fuel (this should be on your energy bills) by the unit rates (these vary so check your supplier’s website).
Your direct debit amount should be the same each month or quarter, and your supplier must inform you, usually within 10 days, if it is going to change.
