Some stupid guy broke into my locker.?

Hi, I came to school thus morning and saw my locker open and my friend Sophie looking disappointed. I asked her what was wrong and she says somebody had broken into my locker. I keep extra pads in my locker in case of emergency, and that was splattered all over the ground. Also all mt stuff had been destroyed I went to the teacher and the office but they won't help me. What should I do? Btw I don't have a clue who it is.