This company were so inept I cancelled my contract as soon as I could and moved to another supplier although they were cheaper. I paid by direct debit but they kept sending me prepayment cards, they said they couldn't read the smart meters but then could, I couldn't see any bills on my account they were all blank, they kept sending me blank PDFs of bills by email to pay. I constantly asked for a final bill which wasn't blank and one finally came in the post 3 months after leaving, I paid the final bill a week after it arrived by cheque having given up trying to pay over the phone, which was cleared and paid in full, I then get a phone call and letter for from a debt collection agency about an unpaid account with them for a strange amount not even relating to my account, I finally manage to get through to Economy energy' who tell me my account has been paid in full and closed, absolutely disgusting! If I had been an elderly customer this could have really frightened me, my advice stay away from this company, cheapest isn't always best, it will cost you more in the long run, in time and phone calls. I'm awaiting a response and apology probably won't get either!!!