Contract Cancellation pending for over 5 months

Since November I have been cancelling my contract with no success. I Have had to contact vodacom every month for the same problem and still no luck. Every month I get debited for a cancelling I have been asking all along. Today I called and spoke to Nthabiseng Khanye who promised that the cancelling for both my numbers *** and *** will happend end of the month April 2021 and I will be refunded within 7 - 14 working days. When I asked her why did Nompilo Khumalo promise me that my cancelling will be done end of March, she said she doesnt know and Nompilo Khumalo just ignored my request for cancellation.

Nthabiseng has sent me this email - We have received your request to convert *** to pre-paid. It has been logged and will take effect on 2021-04-30 00:00:14. Please note that any outstanding usage costs will be billed in the next month's billing cycle. however it does not include the other number *** Please cancel both the numbers this is my 100th time asking the same thing and refund me.