why did i just got banned ? with no reason ?? admin on was art.i was using the race agent and i was playing with m41 and awp on the map helm_deep_s and suddenly i got banned without a warning

You have been banned for 30minutes for General Exploit of Game/Map/Server.

how i was exploiting the map can u tell me ??

not using a shot gun if i had to guess

yeah mate

the general rule is:

if there is no buy menu on a map: you cant spawn guns. you can only use guns that are already on the map.

It seems you weren't aware of this, so it sounds like the person who banned you didnt follow the correct procedure. There should have been written warnings and a kick before the ban.

But at least you know the rules now