Disgusting service from Vodacom, legal action to follow!!!!

Disgusting service from Vodacom and their rewards agent. I was **** to regarding airtime that was being added to my contract. Had a conversation with their agent in July 2020 and she clearly stated on the call that this would not affect my contract end date and that it can be canceled at anytime. I call to cancel this value added product only to find out that the agent upgraded my contact in July. Can you show me the notification of my contract being upgraded and how was it upgraded as that would have been too early for upgrade. I requested the call recording and to date no one has supp****. I will be taking legal action against Vodacom as this was done without my consent.