MTN is terrible

I have been calling MTN in order to get a number for life migration done from my contract sim card to my prepaid sim card and thereafter for a sim swap and I have been misled for over two weeks and have been unable to make use of my new phone as a result because all a while long I have been told lies as to the migration being done and the sim swap.

Yesterday I called again and I spoke to one of the ladies I had originally dealt with in this regard and she said she saw it had not been done like it was promised to be done and that she had escalated it to her supervisor and that she along with her supervisor were making sure that they were doing both, the migration and the sim swap.

I am just about beyond frustrated with MTN I don't know how long it should take for them to help with such a simple query.

At this point I just want to return all the mobile contracts I had taken out with them and not continue with the contract as it hasn't even been a month already that I haven't been able to make use of the other device.