I would urge no-one to use OVO Energy. I would have rated them less than 1 but the system wouldn’t let me. They are frauds - they have overcharged my mother -in-law, a vulnerable 86 year old, whose account with SSE, had a credit balance of over £1000 to £5000 in debit when she was automatically transferred to OVO. Her KWh used have trebled whilst she has been with OVO, they have vastly overestimated her gas bills and charged her for two meters when she got a new meter in Feb. They doubled her direct debit to £321 per month. We complained at the beginning of July and have had no phone calls from them, despite being told we would be contacted, our first complaint was demoted to a “billing issue” and we still do not have a resolution. They don’t care. They must be making millions on the interest from customers overpayments. Don’t use them.