Thanks to everyone who posted on this. I received a voice mail with an automated message (computer sounding) saying that the IRS was filing a lawsuit against me. Glad everyone confirmed what I felt, which is that this is a scam.
Got similar voicemail saying the IRS was filing a lawsuit against me and to call. Knew it was a scam so didn't call. Glad others posted their experience. I feel so bad for those who fall victim, especially the elderly. Makes me want to call them and tell them I am filing a lawsuit against them and someone is right outside to arrest them!