please help me with my harassing neighbor

I have been harassed by my neighbor to the point where i do not want to get out of my car when he and the other neighbor are outside. One of them threatened to make my grandchildren a hood ornament on his car. The other one has sexually harassing me asking me to kiss him not accepting no for an answer. i have several reports on him and I need help. I have to leave my home because i have ptsd and i am scared of them. They have used vulgar language to my 11 and 15 year old grandchildren. He takes xanax and drinks every night and harasses my family. I am not sure who but one of them has been messing with my vehicle on the night of one of the last three episodes i got in my truck and it started to overheat i looked in the hood and my radiator cap was gone oil was drained and my truck blew up. I have no proof but it was one flat tire after another. Things being unhooked like my stearing etc.