Robo call with a computer generated voice says IRS is filing a lawsuit against "you". No identification of the person, just "you". Wants me to call this number back.

Ho hum.........yawn.......The usual phone call in which the IRS is filing suit against me..blah blah blah.  They want me to call them back.  Perhaps I should do that - for fun!  Caller ID states "Wireless Caller" and the phone number. This IS my fifth call this week!  Each call from a different number.