Same as all others are saying, message is I will be sued by the IRS if I don't contact them right away. No company, no department name, no caller name, just a robocall with a poorly designed message.
I received two calls from the same number (404-933-8568) telling me that the IRS was about to file suit against me. I wasn't home but they left a message to call that number immediately. Of course, I checked it out via the net and voila! I am here. I filed online to TIGTA (see post below) at www.TIGTA.gov which will alert the Treasury Inspector General for Tax Administration to investigate and add to their complaint list
Got a phone call from 404-933-8568 and they left message stating that I was being sued by IRS and to call back this number for more info. The caller id showed up as from Jie Zhou from this number. When I called back number just got some static and finally a hang up. No one answered.