do not show him that ur scared, especially of ur family cuz he ll use it against u - tell him u re fine, as long as he's okay with going to jail or getting his ass kicked by ur family then sure release them; show him that ur family got ur back ( even if they are not) that they support u and are tracking him down to punish him if u know what i mean; that should scare him enough ( if u can, create even a false fb account pretending to be one of ur family member and talk to him in a threatening language) - also u can pretend that u informed the police and tell him they are on his tail and that u showed they screenshots of the convo and they know where they live; give him a taste of the terror he s giving it to u and most of all pls don submit, because this is the tip of the ice