It's a scam call claiming to be IRS. Do NOT call the number back. Report these calls to the IRS scam page:
https://www.irs.gov/uac/report-phishing?_ga=1.177345253.11771534.1454553550
got the same call from 213-291-3234. called to tell them to remove my number from their scam. they do not appreciate being called out for sure. i managed to get threatened and hung up on both times.
Three calls from this number today. 2 voicemails in a robot voice. The beginning is cut off but it says something about calling them back because the information is very Time sensitive. Something about an attorney and money. And if I don't call back then "all we can say to you is good luck as this all unfolds on you"