Telkom ********ly debits my bank account

I am coming to Hello Peter out of desparation. I have been trying to cancel a debit order on my account for the past 2 years on a line I had more than 10 years ago. After sending a number of emails to *** for the cancellation since 2018, Telkom has still not executed the cancellation. All that I get from the operators is that the matter has been forwarded to the relevant department. COME ON Telkom!!! Please sort this out!!! And refund me the money that you have ********ly (I have requested cancellation) taken for the past two years.