How difficult can it be to get a sim activated!?

I have been trying to activate the SIM card from a sim swop for ***, card number ***, since last Thursday. The iPhone 5S continues to show 'no service' while the sim is inserted.<br> I have spent literally hours on the phone to MTN to both Customer Care and the Technical Dept. I was finally advised that the sim has indeed been activated but that it needed to be reset from MTN's side (which was apparently done). At the same time, I was required to remove and reinstall the sim, which I did, but the iPhone still continued to show 'no service'. <br> I then spoke to the technical dept again after being shunted around for a while and was told that 'the sim had failed on the network'. I was transferred through to Customer Care who I was told would assist me. Customer Care weren't able to assist and suggested I berate the technical dept for putting me through to them. I'm now at a complete loss as how to get this issue sorted out.<br> Please could MTN attend to this as a matter of urgency.<br>