Call Centre not answering for days

My phone keeps on saying it cant connect to MTN. I cannot make or receive any calls??<br> <br> I have been trying to contact your call centre since yesterday.<br> <br> I went to SAMSUNG wallk in centre in Roodepoort and they said it is an MTN problem. When we insert Vodacom etc sim cards it work perfectly so the problem is with MTN.<br> <br> MTN in Clearwater Mall says they think my phone number has been blocked / deregistered from your network... think they said something about a ML number that they need to give the call centre in order to have it cleared. <br> <br> BUT!!! MTN Clearwater Mall cant call MTN head office because of a strike!<br> <br> THIS IS REDICULOUS!<br> <br> I am running a business and it is my business phone!!!<br> <br> Can you please sort out the call cente!!<br> <br> Please call me on the alternative number provided. It is URGENT!