Our account was transferred from SSE following acquisition of domestic accounts by Ovo Energy. From quarterly billing, this has now changed to monthly. And now they hassle for payment, constantly. Mind blowing nonsense to make head or tail of our account, when calling through another figure is provided that has no correlation to the amounts showing on our online bills. We paid one account by BACS transfer and they insisted we provide evidence. I refused, having checked with my bank account who'd confirmed payment to their account. We now provide online readings as per their instructions but our bills are always estimated because of our SMART meter readings. Problem is we haven't got a SMART meter because we had 3 phase cable installed to the house and Smart meters do not work with our new "old style" meter we have installed. Still they maintain that our Smart meter is giving them the readings every time I call. So they are liars...! You cant pay online either via the website and I refuse to set up a direct debit which is what they want purely because I cant trust them. To add insult to injury, payment for feed in tariff, from our solar panels, has been extended to 90 days from providing meter readings as opposed to receiving payment within 30 days that SSE provided. Please be aware the people handling enquires are not part of OVO, they are an outsource operation, as confirmed by a lady answering my questions today. If you suffer the delights of a phone call or text, at the weekend, claiming that "Your Account is Overdue - Urgent Action Required" - this is also an outsourced collections agency with little access to the OVO systems but will pressure you for card payment. In my instance, the payment had been made two months ago but the agency insisted it hadn't. Ovo Energy is sham