Never agree to a debit order with Telkom

I won't even begin to describe all the problems with Telkom but the recent one has been very annoying.

I cancelled my service in April through their formal written process and have notified multiple agents multiple times of my cancellation. I was well out of contract and well within my right to cancel - I was moving house and no longer needed the landline.

In spite of this they continued to debit my account. I have dispute, reversed and cancelled the debit order from my bank's side multiple times but Telkom keep changing the reference and amount so they can bill again.

Every time I talk to an agent they promise to 'escalate' it to the cancellations team but nothing happens.

Simply don't trust Telkom folks.