Mtn migration or early upgrade

I am highly dissatisfied with the level of service I got from both Soshanguve crossing mtn outlet and mtn customer care consultants. I went to Soshanguve to apply for a migration two weeks ago and was told that it only takes 3 business days and have been waiting since then. When I called customer care I was told that they dont see anything with my reference number ***. I then told the consultant to transfer me to retention department and I can tell you now you will hold the whole day. The level of service is so pathetic. The only option am left with is to terminate my contract