States use grand juries occasionally to return indictments against people suspected of committing a crime.  The federal government uses them excliusively for criminal prosecutions.  But this is all a scam by the IRS scammers in India and Pakistan.  No one is prosecuted int eh US for ordinary tax disputes.  Tax disputes are basically civil matters and are normally dealt with adminstrativey.    IRS does not inititate contacts by phone in any case.  US mail only.  Ignore and block these calls.

Anyone hit by these IRS scams should consider blocking the following area codes:
206  253  360  425 509  564  also are code  202.  The stupid scammers don't understand the difference between Washington State and Washington DC.   They think that the people they call will think that the Washington State area code calls  come from Washington DC.