Jul 9, 2015
Got phone call message roughly July 7 2015 to call back this number. All the key words mentioned by other posts were there! Frightening tone! When I used a work phone to call this number, the lady really answered as 'Internal Revenue Service'. I hanged up! Before, I tried to call 1-800 number of IRS, but their answering system appears not allowing us to check out whether the phone number is valid and official. Since in the post someone said already notified IRS, I wonder why this number was not shut down.