This is how you deal with those players:
When they insult you, you defend yourself, BUT you have to be the bigger person, meaning you have to defend yourself in a mature manner; no swearing, no arguing, tell them how you feel and that’s it. After that, you screenshot what they say, report it on the forums and us staff will deal with it. Then you do /ignore.
If you have any friends or someone you know who is dealing with this and they don’t or can’t create a forums account, tell them to give you the screenshots and you can report those players for them
As for teaming, I’ll discuss it with the staff team.