We have had an ongoing incident with the EDF billing. Our indoor counter malfunctioned about 18 months ago.
We tried to inform the EDF but could not get through by telephone!!! We continued to receive estimated bills which were paid by Direct Debit. For many months I assumed that the out side meter could be read, but apparently it could not!
Still irritated by the lack of knowledge as to how much electricity was in fact being consumed we wrote a letter. That letter was never answered by mail. The one day a chap turned up to say that he was told that our counter was faulty. He went away when we showed him the problem. A few weeks later another 'technician' came and fitted a new counter.
Then we received, after some time, a letter telling us that in consequence of the fault we had been undercharged. The calculated what THEY thought we we should have been charged and if we signed their paper and agreed then that would be charged to us. I did not sign the paper! In the meanwhile we would be credited with the amount which we had paid by Direct Debit over the 18 months. That credit was indeed given - but not in cash. It was registered as against future demands.
We discovered 1/. that EDF have a English speaking conseiller. But also 2/. The electricity Bills ARE calculated by a different organisation! ERDF! I had a warm conversation with the English speaking fellow. I did not agree with their calculation. I said i was not going to sign their form. It all was their fault and that should accept the estimates already made which seemed to me more or less normal. Their calculation of a credit LOOKED OK but I would have ended up with a bill for several hundred more euros.
Meanwhile we had a postal strike (Gourdon -Lot) beginning in January which continued for a month. Some time in February we had a phone call from a young woman who asked "Did you receive our letter?". -'What letter? - We have a strike.' Then, I suppose detecting my wife's ageing voice, she asked 'What are your ages?' My wife replied - I am 79 and my husband 82. The woman replied "I understand - I won't bother you. Have a nice afternoon'.
We have heard nothing since. An amount of 751.56 was taken from our bank account on the 11th March but meanwhile it seems the credit remains on the ERDF account. That worried me - But then an electricity bill arrived in February which was 'deducted' from the credit held by the ERDF, and so no extra amount was taken from the bank. That last bill tells me that I have 597.33 euros now standing EN VOTRE FAVEUR - I suppose all future Bills will be deducted from that sum until again I genuinely owe the EDF or ERDF something for electricity actually used!
I trust you have followed all that!