A man with a heavy Indian accent called claiming to be Officer Mon Bell (?) from the IRS. He informed me the IRS has 4 lawsuits against me and will issue a warrant for my arrest.  I needed to call 210.390.9798 to find out more details.

I goggled 210.390.9798 and that number is connected to a scam.

There is a widespread IRS or "tax scam" being  practiced by scammers on both Canadian and USA residents.
USA tax payers should read this:
http://www.irs.gov/uac/Newsroom/IRS-Reiterate ... -Telephone-Scam

Short answer:
The IRS never initiates a contact via phone.
They always send a snailmail first.

Educational post:
This scam is also described as scam #11, here:
http://phonehelp.2truth.com/facts_rev.html

If you were contacted by an IRS impostor, you may file a report, after clicking on this link:
http://www.treasury.gov/tigta/contact_report_scam.shtml

Someone named Amanda called me at work on my business phone...very upbeat voice, but didn't leave anything other than her name and number. Weird. Blocked. Done.