This number called my cellphone twice today; at 0815 and again 5 hours later. CallerID showed TUCSON, AZ. They're now blocked and won't be getting through a third time. Both times they left the same robot message, which recorded only the tail-end as they must have talked over my announcement, "... TO GET MORE INFORMATION ABOUT THIS CASE FILE PLEASE CALL IMMEDIATELY ON OUR DEPARTMENT NUMBER 520 204 4200. I REPEAT 520 204 4200. THANK YOU." This sounds similar to the fake "the IRS is after you" messages received in the past.

IRS scam calls coming from Arizona phone number 520-204-4200.  Received on my cell today.  Do not respond to this scam.

Scam - IRS "filing a lawsuit against you" - call immediately. Called twice in one day.

Got the same call several times in the last two weeks, always at 0900 and 1200 stating that it's the IRS and they have filed a suite against me and to contact them immediately. They also use Virginia number of 7572545498. What a scam, hopefully nobody falls for it