Report the Calls to the real IRS here:
•report the incident to the Treasury Inspector General for Tax Administration at 800-366-4484.
•You can also file a complaint with the Federal Trade Commission at FTC.gov. Add "IRS Telephone Scam" to the comments in your complaint.
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Do consider maybe getting a call blocking device or phone.. You can google them and many are around $50.00 or so.
Same "Julie Smith" from IRS. Used 415-251-8890 and second time same person called gave the number 415-506-2388. The 2388 number had a loud buzz. Was pretty sure it was fake. Glad to know for sure!