Some guy left a message saying he is filing something against me for criminal activity in my county; if I don't return the call by 3:00 p.m. eastern time, he will file with the county.  Been getting these calls for years and have never seen anything come from it.  Threats to serve me at work, at home, yadda yadda yadda.  Get some papers to me - then we can chat. : )  Total spam.  The fact that this number is not tied to any legitimate firm, company, or government agency is a major tip-off.