Sim swop not active 5 days later

I upgraded my contract to s6 edge plus and needed a new sim. Upgrade and sim swop was done at MTN waterfront on the 19th Sep. By today, the 23 Sep, the sim swop has not taken place.<br> I have been unable to contact the store (no answer) and calling 808 has been a complete waste of time each time i called them. Today i visited another store Old Mutual Mtn, and they can help me either. I am regretting upgrading again with MTN and will definitely cancel this contract if the sim is not activated by end of today.