Awful company. Left them after several errors on my bills, always in their favour. Their final bill was a £75 credit that they refunded. A few weeks later they sent me a second 'final bill' saying I owed them a substantial amount of money. It was a mistake on their part that I had to fight to get rectified. If I hadn't cancelled my direct debit they would have just taken it. During discussions with customer service they gaslighted, lied, accused me of making mistakes, then when confronted with proof claimed it was a "misunderstanding", finally resetting my account balance to zero. How many people have they wantonly ripped off? Just Google complaints against Ovo, it's horrifying.