Disgusting Treatment from MTN after 33 years with them

I want to start off by saying the MTN DO NOT CARE about their customers at all. I was a contract customer with them from 1993 to March 2024. When my contract came up for upgrade, they launched their new Superflex product. I immediately took it out online and let my contact expire. Little did I realise was that Superflex is basically the same a Pay as You Go. Last week my wife (she has had the phone and number for a few years) informed me that she got a message saying a SIM swap had been done. It was definitely not us. Not only that, they ported the number to Vodacom. To cut a long story a little shorter, I called MTN on their 135 number, and you cannot actually get to an operator/agent. Ridiculous. Through email, I contacted MTN ***** and got them to get the porting reversed. This done, I then wanted to go on to contract again, even with a new number. Off I went to the MTN store in Cresta. After explaining everything to them I was told that they would need 3 months bank statements from me. I said they had no right to all my banking transactions. They simply said that that was the process. I walke out and they lost a 32 years customer who never missed a payment. I have take out another contract with the Red network and it took 5 minutes.