Vodacom upgrade ****!

I got a call from Vodacom telling me that they were changing my plan and this device was free, I received the device and then the bill showing that it is not free, but an upgrade. I also see I cannot upgrade until 2024 now!! This is disgusting behaviour to consumers and I want it rectified immediately! I feel completely ****med as I did not want this phone as an upgrade.

I wish to have a recording of the conversation where I agreed to this device as a paid device!!

I also want to cancel this upgrade!