Vodacom will not cancel me contracts with them

Good morning all,

I can't get help from Vodacom Cancellations. I have one number I have cancelled in June 2020 as the contract expired in July 2020 and I am still getting charged for after I have called in June , Augusts and September 2020 it still not cancelled and a second number I wish to make prepaid but was told to call on a different date to make it a prepaid and was told again to call on a new date as they will charge me extra to make it prepaid when the contract expires on 18/11/2020. I will never recommend Vodacom to people I know.