I happened to check my bulb account today and it said £3700 credit with lots of credits adjustments added for several months over the past year. I contacted them to ask for it to be refunded and got a reply asking how much so I said £3k. An hour later a get a statement saying they’re charging for usage since May 2021 and I’m now £41 in credit. Anyone else had this? Seems really dodgy! I’ve replied back to the person who asked how much again to ask what’s going on. I’ve had a smart meter for ages which gives readings to them but doesn’t really show us and I’ve also always given customer readings.