Cancelled, yet still billed?

I have cancelled my Telkom line in October. I also logged a dispute for the line as it has not worked since middle October and your *********** technicians cant get it working either even after 4 calls in two weeks (the reason for cancelling it). Today, another debit order goes off my account for monthly line rental? You owe ME money you *********** fools. Refund me my line rental for October and November, as well as my Deposit and the money you just stole from me. I am reversing the debit order. You PROMISED this would not happen. Then as true's nuts you ***** my money.