Sim swap error

I recently did an upgrade on Friday 3 Nov and also did a sim swap but everytime I got the verification sms and rep**** yes I got an error “network out of order” saturday I went back to the store and the logged a query with mtn and I got a ref #1- ********** 9714 and I was told the sim swap will go through in the next hour as soon as I got home I got an sms saying sim swap cancelled.I went back to the store again on Sunday they did the sim swap again with another sim card and phoned mtn to push it through I was told it would be done within an hour.2 hours went by I called 808 and was told the second sim swap failed as well...and I must go to the store again...how many times do I have to waste my petrol hoing up and down trying to get this sim swap done?? I paid R113 already for it and why should I keep going back and forth doing the same thing?? Mtn service is realy tiring now,please sort this out