They even don't deserve any star, Very poor services, absolutely rubbish, I was using this company for more than a year, so when I saw a reasonable deal online, I made a request to switched over, surprisingly they canceled my transfer over to new supplier, then I went to energy ombudsman with my evidence, after three months long battle they released me with NOC. Now I'm agreed to settle the payment, they sent me four different figures in the last three months £700, £166, £313, and now £818. All on an email asking me to pay, no bill, just an email. Now they are finally threatening me by serving legal notice for not paying. No idea on how to deal with this customer.