Completely scammed by them. I moved into a property in late November and due to it being a new build they had arranged coverage with the property developers. I phoned them shortly after moving in asking for details of the tariff and a bill. They said they would establish the account and send out the details. Three months later I received an unaddressed letter stating I owed them GBP 250 for three months!! I live in a studio and used the heating minimally. They refused to give me a breakdown of the usage or even explain why they didn't send the details of my sky high tariff they had placed me on sooner. Many people in my building have been scammed like this, they seem to have delayed these bills because they know they will make a lump sum before people switch to more honest, professional and reasonable supplier. They have found a legal scam... avoid like the plague and if you inherit them in any way... switch without even checking.