Not Debits being deducted

For the last two month DSTV have not deducted a payment from my account.<br> I have a R799.00 Explora Deal with them.<br> <br> I have contacted the call center who keeps telling me my account is a zero balance. These calls are also costing me money beside the fact that I know I have not paid.<br> <br> The problem is that in a couple of months they going to debit all my outstanding amounts and it will effect my monthly budgets. They are in breach of their contract with me and I wish to cancel my debit order and pay by EFT. This way I can control my payment. <br> <br> Please contact me regarding this as I can get any joy from the call center.