***** at mtn?

I planned to upgrade my contract in November 2020, I was in the process of selecting a phone, however the mtn system was offline for a while and we decided to leave and were told that we should return the next day. The salesperson went ahead and put through an upgrade without any consent, it was the incorrect phone, there was no documents signed and I have been paying for this since November. They said they cannot cancel my upgrade, but I did not ask for the upgrade, I did not receive a phone! Is this *****? Where else do I need to report this before I am assisted? I am currently out R3000, and have been asked to pay more if I want to cancel this contract, I do not have the phone!!! I have been back to that store many times, I have called 135 many times, nobody can help, retentions says they cannot help because they (mtn) did not process the upgrade, so I asked who does the processing, they then say it's mtn. They are a bunch of the most useless reps I have ever come across. I have had my contract with mtn for 16 years now but I am definitely changing providers.

Please give me my money back and remove me from your network so I can get myself a contract that I will approve and sign for!

I am absolutely angry!!!