My number disappears off the MTN network

Mysteriously, my cell number has been erased off MTN systems. I was an Autopage customer and there seems to be a problem with the switch over. I use this number as a business line, which has been off since Friday 15 April. I called MTN and they told me to call Autopage. Guess what....Autopage redirected my call to MTN. I have spent almost 3 hours on the phone trying to resolve this issue with no luck!!!! Obviously MTN or Autopage don't see the seriousness of my query!! Very annoyed!!!