' this is IRS. we are filing a law suit against you. call back 2083920216 to find out more'

Called 5 times in a very short period of time, during work hours

Called this number back.  Got a low life who spoke broken English.  He challenged me to find him.  I told him if he would stay on with me long I would find him.  spoke around 40 seconds and told him, "Got you" and hung up.  I actually did this once with another number and one internet location purported to pinpoint him within 4 feet in Tampa, FL.  Emailed Tampa police with the address and circumstances.  Never heard back.

When I answer this call it's a message stating its the IRS and I am being sued by them  I have called them back numerous times tiling them to stop calling me but the calls continue!

Received several calls from this number - all during business hours.  Voice is a recorded female voice synthesizer with halting speech.  Recorded message states that this is a final notice from the IRS and that they have been trying to contact me.  They are intending to file a lawsuit for back taxes.  I never spoke a word - just let the recording finish and then hung up.