Robotic voice mail saying the IRS will be taking legal action against you. Wants you to call the number back to settle it. Obviously scam. Not the first number to use this same message. Again will block.
Blah blah blah, IRS legal action final notice, blah blah blah. If the IRS needs to contact you they'll send you a letter, typed on paper and in an actual envelope through snail-mail.
CID says Los Angeles, CA. IRS scam, they left message that the IRS has filed several law suits against me, for me to call back immediately etc. Blocked caller