A number called that was unfamiliar to me.  I let it go through to voicemail.  A message was left.  I called the number back.  A male with a thick East Indian acent answered and advised that he was with the IRS.  He (never identified himself by name) wanted me to verify some personal information.  Really?  He then advised that he was with the investigations section.  A second really?  I asked him if he "really" was with the "Internal Revenue Service".  He replied that he was with the "IRS".  He then asked me to veify my name.  After repeated challenges to his identity, he called me by my last name.  He obviously had some of my information.  I hung up