I used one of those calculators yesterday. It's fields were to small to enter in the number of digits that I should enter. I found a contact link and filled out a web mail about the problem.
Within a few hours, maybe less, I had a response from IRS Help Desk
Hey, that is speedy government service. Wait a minute! The email address is not irs.gov but speedymail.com. Hm! Who's speedymail.com?
It is AFFINA, a "one-stop-shop solution for customer relationship management." The story doesn't stop there. In 2006 AFFINA joined Hinduja Global Solutions Limited http://www.hindujagsl.com Hm! One guess in what country that company is located.
Some may complain that the U.S. Government should not be exporting jobs. But I can't say that it is. I don't know where the work of AFFINA is conducted. Besides, the idea of where jobs for a government are done often gets down to we can export our stuff but you can't export yours to us.
When I worked in Europe, for an American company, I was called in for software assistance to the French Army, the Swedish Police (Rikspolisen), the Swedish Auto Registry (Bilregistret), and a few other government agencies. They all had bought American-made Univac computers.
And even more crazy, many European customers thought the American programmers knew more than the local programmers. On some things this was true and on others just the opposite.
Back to speedymail.com, the writing of the messages was straightforward. None of the elaborate "It is my pleasure to serve you today" or turns of phrase that almost shout "Non-native speaker".