No answer - call centre from branch

I've realised this morning that my phone is not working after I've upgraded the MTN package and phone earlier in March. I've approached the rosebank branch to resolve the issue at 14h00, they told me that they have to contact the head office via a specific nr which they've called, after 45 minutes they've still had no answer...... I left then with the assistant still on waiting for an answer. No feedback yet...<br> <br> poor sevice, I had no problem when I was with Nashua.<br>