No service

I Nigel Roets tried to call the call centre today from 5pm until 9pm. with no luck when I tried the last time to report a data query after numerous calls the call centre was closed(even for a lost or ****** handset)..I the meantime i could not eveen speak to anyone..the voice prompts said that the call centre is experiencing high call volumes which could relate to longer waiting periods...what a joke..there is NO ONE to assist,not even for a lost or ****** phone.I have been working for Nashua mobile before and at least the High usage team assisted where possible,even in 24 hour cases..what services is this from MTN as a network on its own??how can you make contact with 173 if no one is available? I have a simple query and just need simple answers as a prepaid customer..can data support please call me on *** to assist,thats if they are not too busy...