Aceman,
As pipes1 explained, a manual ban is related to that local server or group of servers so you have to take it up with the admin(s) that banned you.
It's entirely at the discretion of the server admin to ban who they wish from their server. Easiest solution is to simply play on other servers.
We appreciate the time and effort in keeping the servers running.
It's not until you're down that we realize just how much we count on you.
Reminds me it's way past time to support PBBans with another donation.