received an urgent call from a Allen Cooper allegedly from the IRS to say I was being sued and either call or have my attorney call asap

This is a scam the IRS will not call u they send letters Google IRS phone scams on line . They will say you are going to jail law suit  even act like a officer don't fall for this scam report them us general or FBI or cops these people are in a call center in the Middle East. Scam call