contract cancelation problems.

I had a 24 month contract with cellc, which ended this year end May, but due to an absurd billing system I found out i was in arrears by R2000 when I tried to cancel my contract when it expired, I complained and my issue was never resolved, instead cellc threatened to black list me so i told myself fine I'll pay the money and be done with this poor excuse of a network. I payed the money, which put me in a very uncomfortable financial condition might I add, I contacted one of your consultants and requested a cancellation end of June and got the sms that the service will be cancelled by the next month, but in September they still loaded my account and still tried to debit my bank account which is costing me with bank charges, I called and was told a mistake of cancelling my cancellation was made, WHAT THE HELL IS THAT, I\VE NEVER HEARD OF SUCH IN MY ENTIRE LIFE! I'm tired of calling cellc and sitting on the phone for 20 minutes each time only to get transferred to another department with no solution. CREDIT MY CELLC ACCOUNT AND STOP TRYING TO DEBIT MY BANK ACCOUNT AND SENDING ME SMS TO PAY BEFORE FURTHER ACTION IS TAKEN OR I'LL PORT TO VODACOM!! "