Pathetic customer service

I have been using the MTN network for almost 18 years. However, I was fortunate enough to be a Nashua Mobile client. MTN informed me of a billing date change. Unfortunately their systems \sees"this as my account not paid in time. Hence my account has been blocked because I supposedly exceeded my limit. I call the call centre which says i should use self service. I have tried to use the self service which does not work and the call centre has been unavailable for almost 2 days. I am due for an upgrade. However as soon as I manage to talk some person I will be porting my number to another network. The only reason is because your service is beyond pathetic. I need my phone but cannot use it because you have not bothered to see that I always pay my account and your billing date has changed. I can only think of two phrases:<br> Gross incompetence<br> Pathetic customer service<br> YOU CAN WRITE A MANUAL ON HOW TO LOSE LOYAL CLIENTS"""