They totally messed my bills up. They sent me massively exaggerated estimated bills for my electricity, despite the fact I have a smart meter. I've had an ongoing complaint for about 10 months. I had to refer my case to the ombudsman because talking to their customer services got me absolutely nowhere. The staff haven't got a clue and some of them don't seem to care (I've spoken to enough of them to make this assumption). Even after receiving a written apology from them and leaving them for Ovo, they are still billing me. I've had to speak to the ombudsman twice about the case since receiving the apology. Avoid this company at all costs. They might be cheap, but they're cheap for a reason. Absolutely useless. How they've won awards for customer service is beyond me.