Hi... unfortunately it's going to be difficult for me to help you unless one of your friends can come>}
Can you send one of your friends over so that I can find out more about your situation?
If not it is best to ignore them, they're likely trolls so they feed off of your reaction to them,
However, that doesn't mean you are powerless to do anything.
Put their names on the list, take a screen shot showing every mean comment they've made against you, Then, report it to the moderators of the respective streams which had occurred on their stream.
If that does not work, I'll appeal to one who is at the administrative level.