It is Normal on Icecrown?

[Nobis1337]

Hello, I've been playing the Icecrown server for about 2 weeks.
I've managed to reach level 80.
There is a quest series in the Icecrown where you unlock the faction where you can get shoulder enchantments.

On the way to unlocking this faction you have to complete various tasks in a cave.

However, there has been a player there for several days who is simply killing all the Horde members.
(I've been trying to complete this quest series for days)
Is that normal on this server?
I would like to report this player but I don't know how to do it.

[Obnoxious]

It's a PvP server. Find people to take that person out.