Good sense. Yes, this is a scam. Ignore them.
IRS has put out public notices to warn the public on scams like this.
Additionally, I have a little benefit -- I used to work for the IRS. However, here are some general rules.
1) The IRS agent has to identify themselves, and they are not allowed to leave sensitive information on any voicemail. That is, they cannot say why they called just in case any non-taxpayer hear the message.
2) Basically, the IRS almost never brings a lawsuit against a taxpayer. The taxpayers bring lawsuit against the IRS if they disagree with the IRS. The IRS does not bring lawsuit, it has to use U.S. Department of Treasury through U.S. District Attorneys' Office.
3) I will not be able to differentiate without my background. What I usually do is to keep the voicemail, research on line, waiting for the person to call me again. Sometimes, I call back to see who called me. -- That is not a good idea. But I have to admit that sometimes, it caught my curiosity. That is not good. In today's situation, for any strange telephone numbers, I usually check on line to see what this number is ***** before I decide to return call or not, or whether to pick up the phone next time or not.
4) I call the Police Department or the Sheriff Department to verify. I have also my clients call me to verify.
5) I also know that if a person engages in conversation with them, they actually have part of the social security number. They can even guess about how much money they can get from this person.
These types of scams have data bases they purchase. When we hear about some organization has their data broken into, the stolen database is likely actually sold to others. So, the scam caller can do mess calling with real and updated information.
Please feel free to follow up.