I've been overcharged and nobody can help!! I was billed £600 for one month of gas and electricity which is usually no more than £200. Raised the query and nobody can help you or get back to you. Then I discovered that more money was taken from my direct debit than what's shown on my online OVO statements account. No help here either. Some people at the customer service are rude and unhelpful and the ones that try to help can't do anything as they don't have authority to do it. Incredibly frustrating wasting hours and hours on the phone and nobody helps you. A nightmare it has been. Stay away!!