This is a telemarketer even though the caller ID said USC.  I was curious to know why the University of Southern California was calling me so I answered.  It was not USC but a general contracting company wanting to know if I was planning any work on my house.  I told him I would never do business with any company that began the association by breaking the law as I am on the Government Do Not Call List and that what he was doing is illegal.  He had the nerve to tell me he got my number from the county and was authorized to call me.  I told him that is a lie and hung up.