If you are banned from the Shout Box, it's usually because you have said some thing dumb, or insulted some one.
These bans are hardly ever a permanent thing and shouldn't be a big deal.
However, if you start and more so, continue to question the ban with idiotic questions, there is a good chance your ban will become a lot longer than it would have being in the first place.
So, if you get a Shout Box ban, long story short, don't send me half a dozen PM's about it. I won't read any of them from now on.