account still debited even after cancellation

I subscribed in August and since my subscription there was no delivery. i then cancelled my subscription two months later for no delivery. Now in January my account was debited for R64.89. When i called the call centre last week i was told with an attitude that the supervisor would call me back. I called yesterday was told the same story. Today when i called i was told the supervisor is on lunch. when i inquired about other channels cause clearly the supervisor is never around or is too busy was told there is nothing else i can do. all the call center urgents seem not to know that i have cancelled my subscription but you hear them typing something when you call, and i must use my airtime everyday to call them. THEIR SERVICE IS BEYOND BAD!!! I WANT MY MONEY BACK WITH BANK CHARGES...