BAD FROM JET

I'm writing on behalf of my fiancé. Last month she went in to query at our East London Branch why her instalment was so high, this after she went in some months prior to complain about the very same thing. Once again there she learned that she was on a insurance that she never signed or authorised for, she was signed on to get the monthly magazine etc.. Furiously she asked the lady to cancel all these as she did not authorise this extra things she has now been paying for some time. This month still she is receiving the magazine in the post, this after she asked that the new poastal address be changed to her current address, this is still not in place. We need this looked at as a matter of urgency, and please advise what will happen to the overpayment that has already been paid to Jets for all the extra's listed above, as these were done ******** and without her consent.