Foschini Group Mokopane

I have an account with Foschini Group, few months ago I decided I want to pay it off. The next thing I know I owe more than a thousand rands, which they claim is for magazines and cellphone insurance! I don't receive any magazines and I never agreed to join all those insurances. They apparently can't track down the cashier that signed me up. Meaning I've been paying for something I know nothing about for almost a year now!!!