Ambiguous accusations like this seem very sus to me. Didn't go over well in high school, don't go over well here.
Honestly, there are five shards, each with their own distinct culture. If I don't like one, or it doesn't like me, I try one of the others.
Not everyone is going to like you, no matter where you go, and any expectation otherwise is unfortunately a misplaced sense of entitlement.
Everyone who does their own thing eventually finds like minded people to play with, or not if they prefer to solo.
Now if there was actual harassment, write a report and deal with the GMs.