STOP THE DEBIT ORDERS!

My contract ended on my Mobile LTE Service so I completed the necessary documents after chatting to Telkom support about what is required, this was done on the 13th of December 2017 already. After this I have called into support more than I can remember and dealed with multiple Telkom staff (always ending up resending the same documentation and hearing promises that it is now "sorted out"), I still get debited every month and every month and have to reverse the debit order. The next month it piles on and they debit me again. I have stopped calling in and emailing as it has become to costly, hoped that the reversing of the debit orders would get Telkom to notice me and contact me but no luck. Every month the same thing. I wish I never signed my name to anything Telkom. Doesnt matter how good the deals are, nothing is worth this.