Unwilling to cancel

NPOWER had transfered my Fiance's account with Southern Electric (gas and electric supplier) to theirs but billed in my Company's name without HIS authorisation on the transfer. He is the owner of the current account with Southern Electric. It is not mine to sign authorisation of the transfer. I had just wanted to enquire and get an information pack about getting a lower rate with Select energy. I was promised by Select Energy I would receive the information pack in the post if i agreed to the T&C's, but it wont be signing up to anything. This was miscommunicated to me as this was actually a verbal binding contract which I was not authorised to agree to in the first place. NPOWER complaints department is extremely rude, they do not offer solutions to your problem and cannot deal with complaints, they only can advise the complaints process apparently? What's the point of having a direct number to their complaints department then? They wont process our complaint till 120days time as they have such a large back log of complaint (tells you a lot about NPOWER!). They do not have a 2 week window period for cancelations.