This is a warning to check your bill statement from EDF from November last year. In March of this year I received a guestimated bill from EDF for £100, I thought this was low but as there was no actual reading to base this bill on I thought I would wait to received the red bill hoping it would give more information. When I received the red letter it just stated that I had not paid £100, so I read my meter and posted the figures on line, when I got my actual bill it stated that I owed £320.40 which was a bit of a shock but when I went over the figures it also included non-payment for the previous quarter. I know that I have a bad memory but I was certain that I had paid so I checked on line with my bank and sure enough I had paid it so I contacted EDF and explained that they had charged me again for a bill I had already paid. The operator who I spoke to at EDF informed me that they had gone on to a new computer system and it was not showing up any payment for the previous quarter when their systems changed over, he asked me to send in proof from my bank to show that this payment had been made, this I duly did and at the same time I made a formal complaint, within a few days I received a phone call from EDF saying they had received my complaint and would action it straight away, in the mean time a hold would be placed on my account to stop any further action or letters. I asked how many thousands of other customers this has happed to but no response. Over time I still received numerous letters from EDF when I received my next statement this also including previous bill which had not been paid, I therefore paid my current bill but omitted previous outstanding bill. I have now received a letter from EDF stating that as it has taken over 8 weeks to resolve my complaint I can now ask the Energy Ombudsman to carry out a review, which is what I will do today. In the mean time I have received a threatening letter from EDF to commence legal action as the previous bill is now so overdue, lookin forward to it.