Customer service at MTN is a joke

I have been a MTN client for many years and at least expect good service, but unfortunately this is not my experience. I had my phone ****** today and after having been to the SAPS and MTN twice to get the ITC number since they wanted me to get the box, I went back for a third time to request a sim swop. I wanted to do this at MTN Waterstone Village and was very frustrated when I was told that I had to come back tomorrow or go to another branch for the sim swop. The reason for this was that there was no supervisor on duty and therefore the staff on duty could not do the sim swop. This is unacceptable. I work during the week and can't go back on Monday. I had to drive to another branch to do the sim swop. This is such a critical service and not to have this available on a Sunday is poor quality service.