****** over and over

Not sure if it's just me but does your internet bundles just stop working and when you try and use it you get the msg out of bundles or they redirect you to the Mtn Web site or it says pls try again later and when you try later your bundles is either gone or has expired when I try calling costumer service all they say is that you where connected just a few minutes ago and when I try to explain to them they then say they will try to assist me but never do yesterday my number even got suspended from the costumer service and they keep on saying that I should phone them back later at first I thought it was my phone then I changed it but it still did the same thing I even tried to use it in a modem but it did not get any better so pls what can I do about this .