Close my accounts

On the 1st of March I went to a Game store to find out how much I would need to pay to clear my account,my exact words were I would like to settle my Game store card and RCS credit card so I can close them.The gentleman on the other end of the line told me the amounts I would need to pay for both the accounts which I noted down and was advised that it would need to be paid within 5 days so I went on the 2nd of March and payed the amount.I then went back to the Game store on the 9th of March spoke to someone over the phone and again requested that they close the accounts I was then told that it will take 48 working hours.I have just checked on my RCS credit card if the account has been closed and instead of closure I am required to pay R50.73 I have know idea why as I requested a settlement amount meaning I shouldn't be paying anything more and that fact that the account is still open just grinds my gears.I want both accounts to be closed I have paid the needed amount now do your part and close the accounts.