continuous suspension line

Account is up to date. Spoken to numerous agents & managers. Reasured its a computer glitch and every month i get an sms warning me of suspending my line with legal action. Faxed through payment notifications over and over....they appologise and every month we do this all over again. Explain your story to another agent, get frustrated, have them cut your line....loss of income as my phone is my business. They appologise again and tell me to ignore the message its a computer problem....boom my phone service gets cut and again we start the whole process again!!! 4 months now and after 20y with mtn i feel i need to maybe move to another service provider....very frustrated!!!!! Especially when you have to keep telling your story and sending proof through every month to somebody completely new...!!!!