Threatened legal action reported to my count courthouse.

threatened law suit for taxes

The IRS does not sue people, they have plenty of other ways to collect taxes.  They do not call you, they send letters.
Official IRS Government site detailing this scam and providing links to report it:
http://www.irs.gov/uac/Newsroom/IRS-Warns-of-Pervasive-Telephone-Scam

Did not answer. Left a message about a case in a county courthouse (Tampa- don't live there - never did. Looked up the number and apparently they try to scare people about owing taxes ( federal suit in county courthouse?!) it's almost laughable if it wasn't so annoying

they said they were the IRS and I was to be arrested..