Moved house recently and had British Gas for gas and electricity at old house, but to avoid hassle decided to keep the supplier already supplying new house and then decide whether to change or not and informed British Gas of decision. Anyway British Gas charged for the correct reading of gas but a higher than actual reading for electric, and also continued to take more payments from account, so I contacted them and was told would be reimbursed for overcharging and additional payments within 10 working days and would receive letter and cheque for overcharging and overpayment but received nothing, I have contacted them again and have been told again that I will be reimbursed, will wait and see hoping I do not have to contact them again but if I had not checked I would have lost money, over £500, and not been aware of the fact.