This is the 2nd time I have received this call in the past 2 months - an Indian guy claiming to be from the IRS and who is clearly a fake because IRS always sends written notices first.
Left a VM claiming to be IRS; if you return the call hits a voice mail stating it is IRS. Likely would return call and try collect your social security number. Impersonating a federal agent is a federal crime; trying to locate some federal agencies to report this to.