Received a call from this number today. As others have reported, a computer generated voice stated that it was the final notice, that the IRS was going to file a lawsuit against me, and that I should call 202-738-4400 for more information on the case. Did not call the number and have no intention.
Left a message saying they were the IRS and they're filing a lawsuit. Called back, person with foreign accent said to call back in an hour. TOTAL SHAM, BOGUS CALL!!!!