Business Cancellation Request Not Actioned in 3 Months!

We sent through cancellation letters on Friday, 30 July 2021 9:33 PM as advised by a "Princess" on their support line, she stated her name could be used as a reference. She also advised we could not cancel via phone and had to email. We completed our obligations to cancel. Their estimation is 30 days to action. Very well, then by end August it should have been canceled. We still had to use the modem in August until our new service was set up, so we were willing to pay for THAT month of usage. Since then the service with Telkom has NOT been canceled nor did they provide written feedback as to WHY it was not actioned. And continue to charge us for Additional months where we are NOT even using the data. We sent the cancellation to multiple department emails as well as the *** one. Yet nothing. All we got on Telkom Twitter DM was feedback that the account was not canceled and to send request AGAIN?? So we have and still no feedback. Now we are be charged for September/October. This is a BUSINESS account. We cannot afford any negative impact on our credit ratings. As mentioned, we are will to pay the outstanding for the days the account was in use but in accordance with our initial cancellation request NOTHING more.