Received a recorded call 3 times today claiming to be the IRS and they had been trying to get ahold of me, and this was final notice that the IRS was starting a lawsuit against me and I needed to call 314-449-9391 immediately.
clearly some kind of robo-call - left a pre-recorded message - but apparently started during my outgoing announcement, so all that the computer voice left for me was the phone #. Must be a scam