Billing after contract cancelled - Consumer Complaint for Multichoice Africa (Pty) Ltd

I cancelled my individual contract with DSTV two months ago. Last month they debited my bank account which I had reversed. This month they have doubled the amount to R1 781,24. Because the amounts vary from month to month, Nedbank cannot cancel the debit order automatically. Such debit orders can only be cancelled by the originator - i.e. Multichoice/DSTV.