How do I get phone and ADSL service discontinued

On the 1st of July I sent Telkom a message on their webpage to close my Telkom landline and ADSL account at the end of July. On the 4th of August I left South Africa permanently but that hasn't stopped Telkom from sending me an account every month. I have tried every possible way to get this message through but it is like talking to a brick wall. I then handed the matter over to my attorney to sort out but that has also proved to be an exercise in futility. If someone has a solution for me I would love to hear it<br>