Just in case people aren't aware (maybe it comes up all the time and Reddit's search function is rubbish), our man does a monthly podcast with Emma Newman. They take turns convincing each other of the merits of a favourite work.
Lots of fun and highly recommended!
To explain the situation briefly, elderly relative had built up quite a lot of credit. I got them to drop the DD to £10/month to burn through it. At some point subsequently they upped it to £600/month. At least 4 times higher than necessary; stupid amount of credit has now built up. A straight answer to the obvious question (WTF?) wasn't forthcoming, but they repeatedly said that she wouldn't have this problem with a smart meter. She doesn't want one, because reasons.
So... switching supplier once we've extracted the credit back is on the cards. But are any suppliers a bit more forgiving of old fashioned meters than Ovo? And yeah, seriously considering dropping the ombudsman a line.
Thanks!
ETA
Yeah, a smart meter is obviously the way forward, and convincing her of that is a problem I can work out somehow!
Ovo can still do one though.