Bad Service for Sim Swop

I have been calling MTN since the 31 January 2015 to do a sim swap, the consultants at the call centre tell me that the system is blocking them and that I should try 15 minutes later. since 17/02/2015 in the evening the i have not been able to get anyone at the call centre all I get is operators are currently busy and the call cuts off.<br> <br> This is an epitomy of terrible service and I have just about had it. i am considering porting to another network so that I can be reachable at my previous number.