MTN The number you've dialed is barred from companion pay as you go customers

I have been dreading to write this review but now I reluctantly have to write it in hopes that MTN will do something. From the 04/01/2021 till date (17/01/2021) I've been getting this message: "The number you've dialed is barred from companion pay as you go customers". Every time I make a call this automated voice keeps repeating the same message stated above. I couldn't receive calls or messages, my data isn't working, I can't make calls nor can I send messages. I have been to MTN dozens of times, they've logged tickets and sent emails to technical, KZN head departments, basically countless departments. Not only that, I have also called MTN countless times. I've been given codes to dial and I even did a sim swap, still no solution. Long story short it's currently on on the technical department for over 7 days now and my ticket still hasn't been attended to. My frustration is how can I function without my phone at this time of the year. I believe I've been patient enough. Please attend to my problem immediately. Regards.