Total joke, in Jan 2022 they wanted to bump my DD from £64 to £189! I live in small flat with 2 rooms, so they use a gas estimate;heaven knows how they work that out! Anyway got in touch with real reading(my leccy is smart meter) My account was over £400 in credit, they left my DD the same, raised a complaint about the estimates, here is the latest email from them. "Thank you for your email. I can confirm I have got an electric reading from your meter of 7328 and the gas reading you input as 6674. I have billed both of your accounts today and can confirm the outstanding balance is £475.53, the reason this is high is because you received a refund into your bank on the 9 February 2022 of £398.52 in error. The reason this was refunded is there was a credit showing on a gas only bill which was issued on the 1 February 2022 with no electric being charged on the bill. Had this refund not been issued you your balance would have been today £77.01 in debit. I am sorry this has not been explained to you previously however, this money would need to be paid back to EDF as refunded in error or alternatively we can arrange for an instalment plan to be set up to help clear the balance over a period of time. If this is something your looking to do please let me know." So they failed to bill me at somepoint for leccy which made my account credit which I asked for refund for, and now they say it was an error on their part and want the money back! Also my smart meter reading for leccy has jumped from about 4400 to over 7300 in 5 months! Am hardly at home to use my leccy unless my wee dog is having a party when am not there! They have a duty to supply accurate bills; anyone has an issue with EDF or any other provider get on to Ofgem, I am not letting this go! Robbers!