Had the misfortune of automatically being took over by British Gas when my previous supplier went into admin last year. First few months expected bit of up down till familiar with my usage or they received my historic info. 12 months later they got no more clue than had at start despite my monthly readings.... One min need pay more...Next payin too much....added bonus of warning I will be in debit end of plan....then send me a balance I tried storing on account for winter back with no warning??? Only got accurate bill twice in a year.....and thank god I overpaid all their DD suggestions as I just about covered the last 6 month bill..... The app and online account are about as much use as a chocolate fireguard regarding up to date usage...or anything remotely important. But I would say from my experience an easy way to build up debt if left 6 month at a time. Tried at beginning asking if could get monthly statement so could monitor....nope. International Call centre answer was don't worry if you owe us we will tell you....in 6 months when next bill you( a fortune owing.) That could mean a remortgage with the price of energy. I have just switched supplier. Nobody could be as bad as this... And never have I dealt with such poor account information so leaves you pretty much praying your own usage/cost guess work is better.