i may have had a similar situation with a guy i dated once. my parents knew about him, we only dated for a month and half, and he was a cop. after we broke up he kept calling me. and calling me. and calling me. on my cell phone. on my dorm phone. on my parent's house phone. we blocked numbers. he used friends phones, called from work, called from siblings houses etc. i can't remember how it all ended (this was years ago) but i know i never went anywhere without at least two large male friends with me. it was horrible. i don't think anyone should ever have to go through it.