This is the worse company which exist. I would give 0 star if I could. I am agree with all the bad complains which O2 has . You can see how bad reviews they are. I payed every months during 2 years till my contract was finished and after they sent me another payment with £70 without any reson as I can see they did with many people . Shame on you O2 . You definitely taking the mike .
My advice is do not waste the money to this company they will affect you credit score as well !