Someone in my family is spreading rumors about me and making other family members hate me?

First one of my favorite cousins sent me this awful threatening message on facebook about me making threats toward her dad. Then my aunt and uncle disowned me. Snd now my cousin's dad is calling me and screaming and threatening. I tried to explain that I didn't do anything and no one needs to be swearing and threatening me and he finally hung up. I was scared so I called the police just to make an incident report in case he or my cousin actually tried something. I am not pressing charges or trying to make a case out of it, but I was threatened, raped, and assaulted by a trusted friend when I was 18 so I'm naturally skiddish about these things. I haven't been fighting with anyone, I don't know who could be making these things up but I'm scared. What should I do?