When requesting our refund our account was 146 in credit. Then all of a sudden they issued us a bill of 175 based on readings. Readings which when they were taken were under the estimate values they had used to calculate that our account was 146 in credit... I would not recommend bulb. They also lost the readings I had submitted through the app so had to use readings my landlord had to get 3 weeks after move out, really is a terrible service. And on top of this the billing system had stopped issuing us bills from October so they had to then fix all this which also calculated the account being in 146 in credit... ! They come across as the cheaper alternative but when closing they obviously add extra charges which then makes them one of the more expensive providers! STAY AWAY! I was actually quite happy with the service until this! Was even considering using them for my student flat next year. But because this blatant miss truth i cant justify it.