Help!!!!!!!!!!!!!!!! need help!!! NOW?

sooooo i tried the like a good neighbor state farm is there bull **** and this guy ame. He's about 5'3 and like 300 pounds with a dirty shirt on. He looks like the dad on matilda, just dirty. Well anywho. I told him that i didn't need him anymore and now her refuses to leave. I've been asking him to leave for a week now and i'm afriad he may try and...ahem have sexual relations with me against my will. I lock the door when i'm in my room and bathroom but he picks the lock. Last night, i caught him on porn while sniffing my panties... and when i call the police his *** leaves... then comes back at night. What do i do?