You have to credit them for consistency. If you call the The Office of the Director of National Intelligence, you'll be greeted with an appropriate welcome message. Take a listen:
The office oversees and coordinates all U.S. intelligence work at both civilian and military agencies, and frequently speaks on behalf of the National Security Administration in congressional hearings. Members of Congress have called to remove current Director of National Intelligence James Clapper over testimony last year in which he falsely told the Senate that the NSA does not collect data on "millions or hundreds of millions of Americans" through its surveillance programs.
For those of you who can't listen to the brief .mp3 above, here's a transcript of the welcome message: "You have reached the Office of the Director of National Intelligence. Please be advised that your call may be monitored."
It's very common legal boilerplate, and it's also kinda hilarious.