Money deducted off account even though service has been cancelled

To say I am angry is an understatement. I have felt aggrieved previously with how I was treated as a customer but this is the last straw.

I sent the request to cancel the service in November 2020. I received notification that request was received. In December the service was cancelled. But then in January I was billed and the money was debited off my account. I called as to why my money was deducted even though I cancelled the service and was told it was a system error. Funny enough, the consultants I chat to all say that the system shows that the service was cancelled. So why deduct?

It's been 19 days now since I first called regarding this matter and to date, the refund has not been actioned. I call regularly to follow up on progress and am told it's still waiting to be actioned. When will this happen? I equate this to Supersonic *****ing from me as I did not authorize them to deduct the funds off my account.

I am appalled at your lack of urgency on this matter.

Malusi Nkambule