I switched to OVO because they had good rates. After my cooling off period expired I was moved to an economy 7 tariff, which I did not ask for. Ovo then moved me back to a normal tarrif, but my rates are no longer what I was expecting. Take a screenshot of anything they give you as they may change it without you knowing. I have had multiple copies of my first bill generated, but I can only download the latest one, so I can't see how things have changed over time. I am now stuck with these cheaters for a year because of their early exit fee. I wish I could charge them £50 for changing my tariff without my permission, but sadly it's one rule for them and a different one for me.