I got in touch recently with EDF about advice on how to reduce my bills. The person from EDF seemed quite helpful. He showed me my bills (according to EDF's records) I then asked him how it was that the bills differ enormously from the smart meter installed in my home (and the "energy hub" record on EDF's website). I was told that sometimes the meter "may lose connection", but will eventually update. The gist of it was that I should trust EDF to charge the right bills. I base my entire consumption on the smart meter and then they tell me I can't trust it EDF you are very, very disappointing.