Game bad service....

I opened a game card and it has been working well for me, I called to get a settlement amount and the agent gave me one for R13000 I paid half and called in again to get another settlement amount and I paid R3000.ON MONDAY I called in to get the paid up letter they told me I owe R95.35 of which I paid R95.50 on Monday, I just called in now and I'm told I must pay another R95 to close the damn account.....I WANT THE ACCOUNT CLOSED HOW DIFFICULT CAN THAT BE.