Robo-lady says "Federal Student Loan Forgiveness Program".
I like to screw around with these jerks, so I pressed "1". Got a very noisy connection to "Omar", who guessed I was just stringing him along and hung up non me.
From earlier experience with other scam callers, I suspect these people are not just thieves looking to pick your pocket but might well be Afghan or other militants out to do real damage.
String them along if you like, hear them out but do not, under any circumstances, give them any real information.
Generally speaking, if you're on the Do Not Call list, you can be sure that any solicitation calls you get are absolute criminals or worse.
Missed the call but knew it was a scam.. I did try to call the number after reading the above comments to mess with them, which I too love to do, but you can't call them... just a busy tone.. Darn..