MTN have no consultants to speak to when I attempt to clean up MTN's accounting mess.

A few months ago I had an issue with my account, which I pay when it becomes due, has been suspended due to allegedly not paying my account. I ALWAYS pay my account and now I see that I am indebted to the amount of R1390.00. When attempting to speak to a consultant to sort out this issue there is no option to speak to an ACTUAL PERSON. I am in a position where I am considering switching service providers as this issue seems to pop up every few months.