They just called this morning, 7:55 AM on a Saturday morning! Knew right away it had to be a scam call, no legitimate business would be calling at that hour on a Saturday. Name on caller ID read "Rita Clark". I blocked it before it finished ringing! Thanks Ron B (post above mine) for your post.
Received call from this number at 11:30 Sat. Morning (today) said it was from IRS and they were filing a lawsuit against me, didn't say why or anything. Also, stated it was final notice and to call this number back. I called, no one answered, then it went to busy signal. Definitely a scam.