Nonono, why do people say this?! I was bullied verbally and physically by a group of girls and one boy from the age of 15–16. When I finally went to my form tutor and told her what had been happening (them spitting in my face, hitting me over the head with a chair, etc) it literallu stopped the next day. Never ignore bullies, report them immediately.
Can I ask a US question? I thought a dorm had multiple people in it, so when they were yelling at your door, weren't they disturbing everyone inside? Just as I'd expect more of them to have your back in that situation, because I'd be pissed off at the disruption too!