I am on the "do not call" registry, but received a cold call from this number (according to *69).  A computer voice claimed that there was "unusual activity" on my account at the "Department of Agriculture Credit Union," and that I needed to use my telephone keypad to enter three forms of identification, starting with my "16-digit credit/debit card number."  Attempts to get the computer to turn over the call to a live person were futile, and I hung up.