You can call 1-800-366-4484 or report it at........treasury.gov/tigta/contact_report_scam.shtml
This information was in April issue of Costco magazine. I received same call last week. It was a recording
left on my answering machine.
Same automated callas everyone else. tried to call the number so I could blast them with my air horn..... Bummer! Got a busy signal. But I'll try again later!