Hi, I'm Tim. (Excellent from Windia) :)

Lying is never okay either.

if we want to get pedantic about this, kill stealing is the act of rushing in and dealing the finishing blow to monsters that someone else did the bulk of damage to. It is not killing monsters in a map that people have claimed as their own. No one ever has "ownership" of a map anyway.

Perhaps things would have gone better if you had truthfully explained the situation to him instead of brusquely saying "we're full".

And you obviously have no interest in listening to facts rather than your own "version" of what happened, when you weren't even there. Rofl.
I explained to you pretty clear what "full" means to me. Seeing as MANY parties use expedition rather than normal party, I doubt you'll find any expedition with 36 players in it which is what a full expedition is.

If the person would be open to have a conversation rather than ignoring every single word, it might have been a different situation, but this wasn't the case.

Just how, after he left, he instantly went to a different channel and started ksing them aswell, shows that this is common behaviour for this person.