Incorrectly billed after cancellation

I cancelled my Telkom land line and ADSL service on the 27th of November and was assured that it would be cancelled by the 27th of December as per Telkom's one month notice period. My final debit order was to be on the 1st of January as I was paying my account in arrears. I then received notice of my bill being available online. Upon checking I found that according to Telkom my bill was due once again for the 1st of February. I contacted the call centre to explain and was assured (they checked their records and confirmed I had cancelled), I was assured that the matter was cleared up and that I would not be debited. I have now been debited this morning once more for a service which I have requested over two months ago be cancelled.<br> <br> Why is this so difficult? This amounts to theft. When will Telkom stop billing me, and when will I be refunded the amount I have been incorrectly debited? Two phone calls which lasted over an hour waiting have failed to see this matter resolved. I am fed up.<br> <br> CANCEL MY DEBIT ORDER AND REFUND ME.