Same happened to me a few weeks ago. Same scenario, received a call from some type of lawfirm so they say, and I was told that the sheriffs will come to my work and arrest me. And the second call was the sheriffs will come arrest me at my home. I was like, who the hell are you and can I have your company name and so forth. Boy, they were so aggressive and I told them that I will file a complaint against them for harrassment. They are the rudest people I ever heard and I still have their phone number. There should be a law against these grease monkeys for trying to scare people like that.