Same as others: Kelly Watson from IRS. Error in my taxes and I must call back immediately to correct this matter. This is a scam. When I block one number, they use another number to call from. I did call back and some Indian sounding male came on and answered "IRS." I asked him to remove my number from all future calls, since I know for a fact that the IRS sends letters, not calls. He then proceeded to tell me that I would have to pay $100 to have my number removed from the list. I assured him that I would pay nothing and asked him if he could even tell me which person in my household he was trying to contact in the first place. That angered him and he hung up. Blocking this number, too. I think this either the 3rd or 4th number they'very called from.