I live in university residence currently. Recently I've been pranked a lot because I keep leaving my room unlocked. Went to the gym to find out that one of the girls had stolen by key before I left and along with another of the girls had fraped me again. Usually I don't get angry at these things because my profile picture getting changed to a hippo and my interests being "men" is kind of funny.

This time, they had gone through my computer and uploaded photos that I DID NOT want on facebook and had fucked with a few things on my desktop. For whatever reason (probably because I was embarrassed) I was really pissed off. I didn't take it out on anyone, I locked myself in my room and waited for my temper to die down.

These girls tried to apologize (letters under the door, texts etc.) throughout the evening. I feel that this was kind of a pussy/BP way to act and that I perhaps should have just told them off for it with losing my temper. So how should i have dealt with this behavior from these girls?

Edit: door is now locked and booby trapped