MTN Gateway - bad service

Good Day,<br> <br> On the 25/07/2015, I went into the MTN store at Gateway Shop F049, to do a sim swap via purchase of a microsim card. The consultant that assisted advised that this takes 24 hours to action. After 36 hours, the swap was not done and I called the call centre 6 times in the last 2 days and I was assured that she would get the manager or the consultant that assisted me in the store to call and do the swap again. No one has contacted me back to advise. This is such horrible service, how do they even operate as I myself tried calling the store at least 6 times in the last 2 days and no one picks up. They obviously do not value their customers.