They left message saying they were from the IRS and that a lawsuit was pending against me.  If I did not resolve immediately, they threatened to revoke my drivers license, lose my job, be arrested, and have my back accounts seized.  They said there was already a red flag against my bank account, but not to go to the bank and ask them,a s they would not know about it.  They wanted $7500 due to discrepancies they said they identified in a random audit for 2009-02014.  They first said the details were sent to me twice, but were returned as there was no signer to receive the info.  I was told local authorities would contact me but I would not be able to make amends later, if I did not make payment immediately.  The man identified himself as Alex Marshall, badge # GS2294, and was followed up by someone named Kristin (sp?).  The caller ID said the call was from Montebello, CA.