Hell I just avoid arena until my groupmates want to run, it's nothing against our little cluster of servers I just prefer having a chance to fight my own mates solely because we * talk eachother... though too often members start "accidentally" fighting other people over mutual hostility which leads to me kicking my own peeps, them rejoining and us failing GNW x_x.

If it's getting extreme and I mean actually to the point where the fight rolls beyond battle chat, you do have the power to pm a leader of their group, most group leaders don't want bad eggs causing fights and drama that make the group as a whole look bad. Respect and basic detail's in such messages would go miles to some form of action being taken, remember we're all human. There's no need to repeatedly msg over it nor dwell on it, odds are it will boil over or be dealt with.

ex: S00.Name has been needlessly toxic to me/and or my group, they've been starting fights and filling world with threats and spam directed at individuals, it'd be much appreciated if you could talk with them about it.

*if it's to the point that you need to make a customer support report SS' everything relevant and give detail, even anything that incriminates yourself, honesty is as important as the details.*