Terminating Vodacom Contract and convert the number to Pre-Paid

I have been calling Vodacom to cancel my contract that is now over 24 months. I have spoken to several consultants from Vodacom cancellation department since the 14 November 2020. I have been promised that the cancellation has been scheduled. To date my contract is still active and no indication on when my contract will be terminated and converted to pre-paid. And whenever I do a follow-up I speak to a different consultant who provide different information. I am not convinced that it takes this effort to terminate a contract that is over 24 months and convert the number to pre-paid.