" They said that its not a problem with there system, its just that to many people are using it at once. "
Aaah, isn't customer support funny! I've got another good one - have horrible congestion on the highway? The problem isn't that the road doesn't have enough lanes, it's that there's to many people driving on it!
I think all circuits busy is my most hated message, because all they would have to do to fix it is buy more equipment! (unlike spectrum, which isn't always available, or towers where they have to negotiate to try to find a site)