Terminate line without permission.

They called me to sell me an upgrade. I asked for a 24 month contract and an Iphone 15 not 15 pro. This was confirmed 4 times. The phone arrived, wrong phone and 36 contract because the agent will make more commission on a longer term. I called to cancel the contract and revert to my previous month to month contract. This was confirmed, only to find out that they cancelled my entire line and moved it pre-paid. All airtime and data that I had GONE. In addition, I need to start an entire new contract subject to credit rating which decreased because according to them I cancelled the contract early. Everyone at the business, management included does not take responsibility and hides behind the call center while I sit with the problem. Vodacom does nothing about this too and simple push blame.