Being harassed, idk what to do.

So my bfs family hates me. His mom an dad are sick twisted individuals who had him married to someone that his dad was sleeping with. Yes His mom knew and yes she was helping him cover it all up because his dad wanted a biological kid. Anyway that is a whole nother story. Long story short we went no contact with them last year. Bf changed his number and didnt want me to give it to his family. Since then his dad had messaged me. I blocked him he then messaged from social media and i blocked him there. He then gota new number again. I want to get an order of protection but since his mom realized his dad could go to prison for certain choices she got close to the police in a twisted backwoods county. This makes me fear for my safety more... what should I do?