Robo call left message on voice mail saying that this was a final notice and that IRS was filing a law suit against me. To get more information, the recording said to call 562-202-8529.
Note to anyone who might be frightened by this kind of message. The IRS would NEVER notify you of a law suit by telephone. This is NOT the IRS calling and they are not starting a lawsuit against you. It is a scam.