DON'T TAKE A GAME ACCOUNT

Hi I settled my account on the 15 November 2017( reflected to RCS on the 16th). I made 2 payments for the amounts of R350.00 and R 3081.29. I get informed I had overpaid them for the amount of R298.46. The amount was refunded in January 2017. On The 11 March 2018 I receive an sms that I owe R160.49. I call Game RCS on the 12 March 2018 at 15:28 . The consultant says if the account is still open you will pay service fees. I paid the R160.49 . I call back again on the 12 March 15:36 to be transferred to Accounts. The department apologized and said there is no such thing because I haven't made any purchase. The account is up to date it is an error on their side and I never had to pay that amount. The amount for R160.49 will be refunded. Today 14th March 2018 at 10:37 I call to follow up. I call and speak to Luther who tells me service fees wont be refunded. My question is why are your staff misinformed? Why are they being thought to practice ******ion? How is this effecting my credit rating? I don't owe Game any money and what is being done about this? Can I obtain a settlement letter stating my account was up to date from the 15/16 November 2017. Please can someone contact me.