Said they were IRS and were going to sue me

Yep, another IRS scam.

IRS scam -- I don't pick up but they leave message & phone #:  "threatening" call -- "cops" are next unless I return call.  Attempt at idiomatic, psuedo-legalese English -- sounded like something out of a 60's tough guy TV show.  The 2nd in 2 days.   Had another last week.  Grrr...

Yes i got a call from this number saying i owed the irs and they where going to send the cops for me

They said I owe taxes and would send the police