Company threatened me on my work # that they were going to sue me if I didn't pay a debt from 2009 which I knew nothing about.  I told them send me more information but don't call me at work.  The called back a week later threatening again and I again told them don't call me at work I asked for the information on the debt I owed.  My mother is now getting calls that I am going to be sued and they want to know where I work.