*********** Vodacom Continues to debit account after cancellation

I have been contacting Vodacom South Africa for over a year since August 2019 to cancel a contract. However every month they still debit my account.

Everytime I call, I am assured that it is now sorted, but come end of the month, they still take their money. It's been escalated a few times on the call, but seems like either nobody takes it seriously or they are not competent enough to perform this task.

The email posted that should be used is ***. however, this never gets delivered.