Robo-caller claimed to be with the IRS, stated that they have been trying to reach me, and this was an official final notice that the IRS was filing a law suit against me. "To get more information call (202) 684-6433." The caller ID said "Name Not Found". As usual we did not answer unrecognized callers and this was answered and recorded by our answering machine. We have saved the message and reported the incident to the government.