If you are banned on a room that you have access to with ChanServ you can type the following command:
/chanserv unban #RoomName
Replace RoomName with the name of the room your banned from but be sure to keep the # character in front of the name. ChanServ will remove all bans on the room that prevent you from entering.
If ChanServ has a ban on someone else you can remove the banned masks. (IP address or host name) The following command will clear ALL bans on the specified room:
/chanserv clear #RoomName bans
Once again substitute RoomName for the room you wish to remove the bans for and be sure to place the # character in front of the room name.
Note: If users are being banned automaticly you may wish to check your settings for the command SET RESTRICTED and make sure this setting is off or to better understand the command.
/chanserv help set restricted
Nothing rhymes with Cindy Crawford after 9 coronas...