Game RCS fails me.

Hello Peter.

Sometime 3 years ago, I took goods at a Game store. Instead of buying with cash, one of the workers advised me to open an account with Game. I then did that, she told me that Game had given me R7000. I then bought items worth R6000+. I then filled a paper that stated the duration of which I want to pay Game my account at which I said it has to be 12 months. I gave Game RCS to debit the money from my account every month for a period of 12 months. 2 years later, I saw that Game RCS was still debiting my money, I called them to get a clarification, I was told that I had paid all the money I owed Game. They were still taking my money because I had not closed my account. They told me that I should come and take goods worth R4000 which I happily did. A year and some month later, Game is still debiting my money. They called me yesterday(27/06/180 and told me that I was owing to them R4000+.

Hello Peter, can you kindly assist me to find a clarification.