Assuming you are "JohnsonCalmDown"...
Looks like you were previously banned from the server...or so the server says.
Assuming when you say "server admin told you[...]" you are referring to a player/admin, not EA customer support.
Talk to Customer Support and see if you are on the ban list for that server (have server name ready if possible). You can also navigate to the punkbuster website to see if your name appears on that list.
Additionally, if it is a rented server, you can be banned by the owner/admin (the actual players, not an employee of EA or Dice) no matter the game type. This includes "Official" game type which can be accessed via standard use of "Quick Match". They can ban you for literally any reason they want...stupid I know.
The message you received could be a custom message the owner/admin created as a ban message for you in particular. So, also check with the actual leasee of the server to see if you may be on their list.
Note to all: If you play on a rented server, managed by players...either make sure it isn't a 12 year child or make sure you don't do too well...cuz that 12 year old (mentally or actually 12 years old) will ban you for kicking his behind and destroying his stat padding.
If I was dumb enough to rent a server, I would so start a blog page collecting all the user names of owners/admins that ban for stupid reasons and troll the * out of them on my server when they pop up LOL.
