Vodacom cancellation process is a nightmare

I am so disappointed in Vodacom cancellation dept who I’ve been with for so many years. I found out today on the MyVodacom app that the phone number stated there not the number I’m using. I had never noticed this before. I went into a Vodacom store to enquire and was advised to call *** which I did. I spoke to a very nice lady named Shamila who assisted me with cancellation after trying get me to do a sim swap which I did not want to do. I was prepared to lose the data to just get this number cancelled. I then get an sms that states I have converted to prepaid it does not say I have cancelled. I then speak to Shamila again , she says that I will have to pay for another month and that Vodacom does not use the word cancelled in their communication. So I’m sitting without proof that I’ve cancelled. Shamila advised unfortunately that’s how Vodacom works which is unacceptable. I have to pay another month, get benefits I cannot use and there is the possibility that I will be charged again going forward because it now says “ Converted to prepaid “ and not cancelled. This is totally unacceptable.