Billing and handover:termination not attended.

I took a contract with Telkom in June 2018.At the end of the contract end of June 2020,I told them that I do not intend to continue with the contract. I then gave them an instruction via email to run the last debit at the end of July 2020.Telkom disregarded this instruction and continued to bill me after the 31st July 2020.The contract in question relates to this number ***. I reversed those debit orders as those were unauthorized debit orders. Telkom has decided to hand me over to the lawyers for their own incompetence(failure to attend to an instruction to terminate the month to month contract after the end of the agreed contract period of two years). This is nonsense. I have never seen such incompetence from a telecommunications company like Telkom.