when my partner got his new contract with carphone warehouse, they told him that when he recieved his 4th bill that he would recieve £90 cashback, all he has to do is take his bill into the store. before he does this does anyone know how they pay this, is it cash or cheque? and how reliable are they? ive got a funny feelin something will go wrong, its seems to easy and too good to be true. thanks for any help.