Uncapped Line cut off?

My internet just stopped working last night and when I tried going onto an internet browser I got this message: The bandwith consumption on your uncapped account has reached a stage whereby it is having a negative impact on the general performance of our network. Your account will be managed in a manner that allows us to optimise network efficiency for all users. Now firstly I needed to work from home last night as well as tonight so I am losing income because of this, secondly why am I paying almost R1000.00/month for uncapped if im being cut off now? with no warning etc.This is absolutely ridiculous service and I am now on hold for going on 33minutes trying to find out about my accounts and when it expires. I want answers, the consultant I spoke to today was so rude and extremely unwilling to help or explain anything to me.<br>