Cancelled contract still being debited without consent

I have been trying to cancel a FINISHED contract since the rugby season, and have failed dismally after FOUR failed attempts. 3 in the Table Bay mall branch and 1 (very promising attempt) at Bayside mall. Every single Time i am shown On the screen that it is officially cancelled. But month after month my account is still being debited. I have requested a Stop from FNB but somehow monthly, they still go in as they please- i therefore in turn get monthly penalties for THEIR ******** ATTEMPTS on my account. TELKOM, STOP ROBBING ME OF MY MONEY, AND REIMBURSE ALL MY CASH FOR THE PAST FEW MONTHS! I long stopped using your service, so why am i still being billed?!! I have failed with your branches, who am i supposed to talk to now?? Yol dont even answer your phones when i call after making me hold for more than half an hr each time! Mxm! Im VERY frustrated ryt now