Staff ignorance

I have been a loyal MTN customer for 15 years. Yet I am currently getting the wors service ever! Did a telephonic upgrade on Tuesday 9 Jan, later the same day the consultant advised that she had to request a credit limit increase to be able to finalize the upgrade. I beleive the turnaround time on a service request like this is 48 hrs. On. Thursday 11 Jan i had to follow up on the request. After several unanwerd calls an email i evantually manage to get hold of my consultant Mirriam Chapola. She could not provide me with any feedback. I requested that I be contacted by her manager before COB. Guess what Friday, 24 hour later, I sent an to my consultant addvising her thatno manager has contacted me and I urgently want tobe contacted. Well once again the consultant just igored my email and my request. Is this the service a loyal business customer deserves?? Hopefully the CEO is aware how his staff are chasing away loyal customers!!