Voicemail not working

A month ago my voice mail stopped working. I phoned the MTN Customer Services line (808) and was assured by the person on the other end that the problem was a software upgrade issue and would be sorted out within 24hrs. 3 days later I phoned again and, after 30 minutes on hold, was told that the technicians were actually working on the problem as we were speaking and that my voice mail would be up and running any moment now. A few days later I phoned again and was, once again, assured that my problem was a priority and that the problem would be sorted out within 24 hours. As I write this I am on hold again after having been trying for the past two days with my calls being continually dropped. As a loyal MTN customer of over 15 years I am understandably a bit fed up. In my line of work it is vital that I have a voice mail service as I am often in meetings where my phone is off. Come on MTN! Sort yourselves out!