Female with mild Spanish accent (I think) posed as being with IRS threatening legal action. On call back she answered "investigations dept. of the IRS". Obvious scam. No one gets a human when they call the IRS, and they don't call people on phone. They will ask for your SSN to confirm their information is correct. (They don't have any information.) I expect what follows would be a most unpleasant surprise. Number is now not in service, probably throw away cell. I should have played stupid and given them my exes SSN.