MT AGAIN

So I called MTN for an upgrade on my contract on Thursday. I told them what package I wanted and the upgrade was done quickly. What followed was tedious to say the least. Firstly after I finished with MTN, my SIM card stopped working. If he just did an upgrade my SIM card should not stop working. Ok but even if that's process, I was not notified of this during the upgrade process. I called them again yesterday to find out what's going on. After calling several call centres and the head office, I finally got through to the right call centre and asked to speak to the manager. A guy called Moagi (or something like that) came on the phone. Who I don't thing was the manager. He said he had to override something and the guy that has that access will be in at 2. My SIM card should work after 3. It's Saturday morning at 10am and my SIM card is still not working. Even my mobile data which is on Afrihost (cos fk MTN and their data prices) is not working. Can someone please sort this out?? Btw if you're reading this, check my profile, you'll notice all the dealings I've done with MTN I've had to come to HelloPeter about. Seriously why do I keep doing business with these fools????