CANCELLATION OF CONTRACTS WITH VODAOM

I took out a contract in 2018 July and now it is 2022 I want to do a cancellation and Vodacom consultant Phume is telling me I did an upgrade in November 2021 of 1GB and 100 mins but that is not true and therefor I am not due for any cancellation. Whilst we on a call she ask me to speak to her Manager Nomthandazo and then she says on the system it says I did an upgrade in May therefore she needs to check the recording and it will take +/- 7 working days. My problem here is I have two existing contracts with Vodacom which 1 has long passed its 24 months period one I took in 2020 that I also want to cancel in feb 2023 as I want nothing to do with Vodacom. This migrations I am being told about that I made the call that is not true, why would I migrate for what reason and what was the purpose. I want nothing to do with Vodacom I would never want to use them for anything I have received bad service and I am extremely unhappy and dissatisfied and I am awaiting the recoding's they claiming they have.