MTN ridiculously poor service regarding contract migration

I have been a mtn client for over 10 years and although for the most part I was happy with them I am now experiencing the opposite. I have previously moved my contract from my dads name to mine and this was not easy. I now want to move my contract to my business's name as its already been payed by my business account for the last two years.

I need to to this to qualify for the SME contracts they have and in theory or at least to me this should not be very difficult as its only the name on the top of the contract that should change and the banking details stays the same.

I have been to three shop which one told me outright they can't do it and the other two took my documents and I haven't heard from them in a month. I finally emailed MTN corporate and got a quick response at fisrt by they have also gone silent on me.

I have to upgrade in a weeks time but at this pace it just seems better to cancel the contract and look for beter service elsewhere.