Wonder if the same base is connected with the 812-301-6534 fake IRS number as well; have gotten recent calls from both. Again, for those unfamiliar with this con, the IRS always makes contact via U.S. Mail first in regard to any issues. There will be callback numbers within such mailed notices, but expect to sit on hold for even an hour or more before an agent answers. These "final notice" calls are preying on fear and the notion that many have not been absolutely complete when filing returns, so guilt and paranoia cloud one's judgement. Never assume that callback numbers from a suspicious call go to the actual agency purportedly calling you. If you are unsure, look up independent numbers for your bank, business, whatever and call those numbers - in all likelihood, they will be very different from the fraudulent numbers you were supposed to call.