As a mentor it's sad to read these things, however poeple do have to realize that most players that are trolls are just poor excuse of human being that really have no output in life do to their crummy life, have no social life, and feel some sense of power over harassing other people. Best thing to do is report them to GM so they can take action. Many thing it does no good, however the more people file the same complain about the same person, as in get whole novice network to agree and file a gm report right away about the same player, most GM's will take action that same day.