Pathetic service from The Forschini Group

In May 2019 I made a purchase at Sterns South coast using my totalsports card, TFG (The Forschini Group) added 2 different magazines to my account without my consent nor signature to which I did not take note as I had paid up my original purchase. After a few months I started receiving sms and emails saying I owe hundreds of Rands to which I checked my statements and saw it was magazines. After going to a TFG Sportscene, we enquired with the accounts section who stopped the magazines, gave me a reference number to investigate so the amount can be reversed. 6 months later I am still being invoiced and have been handed over to collections and put on the credit bureau which has now negatively affected my credit score and cant get any credit because of the *********** employees and management within The Forschini Group.