Call them back and tell them you've been to college, they will have no more to say and direct your call to an automated service with an option to be removed from the call list.
They called me almost daily with different numbers ranging from 2270 to 2274, I have an Iphone and clicked on the info button on the number and blocked the caller. Waiting for the other numbers to call me so I can do the same to them.
They have called several times and today a robot talked to me about Medicare. Said they had some questions. The first one was "How tall are you?" I said "What does this have to do with it? And I'm 9ft.11inches!" Then they hung up!