Telkom Mobile Debit Orders not reflecting on Account

This has occurred more than 3x whereby a debit order transaction occurs on my personal bank account and the amount doesn't reflect on the Telkom Statement therefore account shows as overdue. How is it possible that Telkom initiates a debit order and they still are not able to allocate it to the account? I have phoned 081 180 a number of times and I have to explain myself every 2nd month. You cant escalate it to the next level as no-one seems to exist? I have a case number ********** 94 and i have still not heard anything. I have tried changing my debit order date unfortunately to no avail, they just take off amounts as and when they please. Biggest mistake taking out a cell phone contract with Telkom!