Poor service

Upgraded my contract on Tuesday 22 Sept 2015 which required a sim swap being done. On Wednesday received an SMS from MTN to say sim swap done. Have tried logging into network with the new sim since then only to receive messages saying \not registered on network"Have contacted the local MTN branch and received good service from the staff but they have to submit the query to head office and there the problem sits. Have contacted the call centre on 808 and have been given another number to phone (which did not work) and have been redirected to various parties who say they cant assist and that I must contact the branch. What a circle of frustration. This is now my families third issue with Mtn in 3 months. Fortunately the other two matters were eventually resolved.Why cant matters be sorted out timeously without all the agro. Unfortunately their competitors dont have reasonable coverage in my area so I am locked in."""