I got the same call....IRS, stated that if I didn't comply with paying $7,645 over the phone the police and a IRS representative will be at my door in 30 minutes. Stated they mailed several documents...I asked to what address.....we cannot tell you that!!! I asked was it certified....we cannot tell you that!!! Then I asked him where was he sending the feds to......cant tell you that he said..... then I laughed an hung up.