During my year as a First Utility customer (prior to them becoming Shell Energy) I had an issue with my meter, which was confirmed by a member of their support team. This was reported in October and despite being assured this would be fixed/replaced, come May when I moved out, it had not been nor had an appointment been re-arranged after their engineer cancelled at the last minute in March. A few months later, they sent me a bill for £1500 (9 months of payments apparently) saying that they were satisfied they'd fixed the issue...obviously this wasn't the case whilst I was in the property. Numerous months of back and forth later, they said they'd lower it to £850 based on an estimate. Having admitted that that their equipment was faulty and then not charging me whilst the issue was being 'resolved', it seems rather extraordinary that they can pick numbers out of the air like this! Still deciding whether to take to small claims court as clearly they are just guessing at this point to try and get some money out of me...