MTN Contract Upgrade

I received a sms from Mtn stating that my contract is due for an upgrade on the 1st of Dec 2017. So on the 1st I went down to the local Mtn shop in Piet Retief where the assistant told me that the upgrade was only due on the 11th of Dec and she can't do anything for me at the moment. So I went back on the 12th and upgraded to the Skylite package (unlimted calls package). I received the confirmation that my contract has been upgraded, but on the first call I made the computer voice told me that I don't have airtime on my phone. I went back to the shop again where the lady that assisted me, told me they made a mistake with the upgrade and instead of the Skylite package they "upgraded" me to a pay as you go package. The lady confirmed that they'll rectify the contract and I should be good to go in 20-30 minutes. About 2 hours passed and I was still on pay as you go. I phoned the call centre and after a whole bunch of personal information questions they asked me how I receive my statement. I explained that the statement goes to my office and I don't know how they receive it. The call centre operator told me if I can't answer they can't help me (this was after I gave her all my other personal info correctly). So I drove back to the shop for the 3rd time that day and asked the lady what's taking so long. She rep**** that she was on lunch and will do it now. This was after I told her numerous times that I do all my business on my phone and I can't afford to wait for hours for them to fix their own mistake. It took me almost all of my day to achieve absolutely nothing due to the horrible service from Mtn staff. I have been with Mtn since they started in SA, but I'm done with poor service. I am cancelling my personal contract and all of the other business contracts I have with Mtn