MTN BAD customer service

My phone got ****** on 21 May. I blocked my sim and my device.My new device was delivered on 4 June. I went to 3 different MTN branches in Nelspruit to do a sim swap so that I can get my old number back and use my new device again. Since the 4th of June, I went to the branch 6 times already. I called the customer care number numerous times and everytime I get a different response. Customer care tells me that it shows my simcard is unblocked and I can go into the branch to do the sim swap. When I arrive at the branch I am told that it still reflects on the system that my number is blocked and they must log a query and escalate it. 5 calls have been logged already, and everytime it is said it takes 2 to 24 hours to resolve a query. This is oure incompetence and I have never seen something like this before. I have been a MTN customer for years and this is the treatment you get? What happens to " Valued MTN customer" For Goodness sake I just want a sim swap and my number active because I need this for my work. I am very desperate and so fed up with this back and forth