VODACOM CONTRACT CANCELLATION

I have been trying to cancel my vodacom contract since December 2020 (which has ended a very long time ago), I've made numerous call requesting cancellation, I've emailed customer service, cancellations and retentions. No Feedback. I keep getting billed for a service I do not use nor require. I agreed to pay the last installment in march 2021 after which i was told that the contract will be cancelled. But it was not. I was forced to instruct the bank to stop the debit order. I was told by the cancellations department that they are able to see how many times I have called and requested cancellation but they do not know why none of the cancellations have been processed and that they are still unable to assist me until the accounts department re-opens the line. Still nothing..... Still waiting.... it has been 7 months, CANCEL MY CONTRACT!!