Cancelling a contract is IMPOSSIBLE!!!

I have cancelled my subscription with Telkom in April already yet still they deduct money from my account. I have proof that my request to cancel my subscription has been completed and closed and after numerous phone calls where they put you on hold and transfer you around and then eventually dropping your call. And when you eventually does get through to someone they will tell you that the issue is sorted and they will no longer be deducting any money, well that is a lie because they are still deducting money. The call center agents are of no use and they word don't mean much. Worst customer service ever.

If this is not sorted soon I will escalate this even further until it eventually becomes a legal matter.