help ???

You'll have to ask that server admins to remove the ban.

You may have been banned from a server admin, which means you can no longer play on that server, if you got VAC banned you can no longer play on most VAC secured games.

Avoid installing hack tools and be a good team player (regardless of smack talk) and the rest of the world will respect you.
If you can get on any other server then you're in luck and NOT VAC banned. But now you know that particular server has a butthead admin. But even then, some will just kick, or temp ban (1 hour, 5 hours, a day) so if you do get back in(from a kick or temp ban), try to be nice for their leniency.

Originally posted by Carmine ☭:

You may have been banned from a server admin, which means you can no longer play on that server, if you got VAC banned you can no longer play on most VAC secured games.

He's not VAC Banned, look at his profile. It's just a server ban.

Tito Shivan how do you contact Admin when banned to lift ban?

Originally posted by Knoppie_Gelukkig:

Tito Shivan how do you contact Admin when banned to lift ban?

Depends on the server. Different servers have different admins and different admins have different rules.
You'll find that the vast majority of CS:S servers are not run by Valve.

Dust Sniperless is a very popular server, any idea how to find admin?

Originally posted by Knoppie_Gelukkig:

Dust Sniperless is a very popular server, any idea how to find admin?

If it's "very popular", Google it?
Maybe the Server Name has a web address or clan name in it? Google that.

Originally posted by Carmine ☭:

if you got VAC banned you can no longer play on most VAC secured games.

To clarify:

VAC bans are per a game basis. Getting banned in one game will not ban you from others. There are a few exceptions:
https://support.steampowered.com/kb_article.php?ref=7849-Radz-6869

Cheating in one of the following Source games will result in a VAC ban for all games in the list and your items from Team Fortress 2 will be removed except any items that have been purchased:
Counter-Strike: Source
Half-Life 2: Deathmatch
Day of Defeat: Source
Team Fortress 2

Cheating in one of the following Gold Source games will result in a VAC ban for all games in the list:
Counter-Strike
Condition Zero
Ricochet
Day of Defeat
Team Fortress Classic
Half-Life: Deathmatch
Deathmatch Classic

Game = Compleat Game.

If you are VAC banned in MW3, then you can still play BO2 just fine.
-----
Sorry, Carmine ☭. I was unsure of what you meant by VAC secured games. I have a feeling you were talking about individual instances of the same game, but wanted to make sure people aren't confused.