Fake irs robocall telling you they have a lawsuit against you and to call. Ya! Right! Irs will only notify you by snail mail about issues, but if your concerned... go to the irs site and use that phone number, not this one, to make sure.
I got that same call today in Tennessee while at work. It's an automated IRS scammer. If it bothers you go to IRS.gov or get the REAL number from the website and check it out.