WotLK Is griefing bannable?

[Fi40]

Is griefing bannable on this server and if it is how long is the ban duration for it?

I reported like 100 players so far for griefing, like using spells and abilities before the arena game starts, none of them is banned.

What the hell is going on here???

[Thorbjorn]

Here's the rules: http://forum.warmane.com/showthread.php?t=65037