American Diabetes Association. They hung up when the answering machine picked up. Then they called back and did it again. And a third time. I called their main number (1-800-342-2383) and asked why they kept calling repeatedly and hanging up. The woman got abusive, said that I wasn't allowed to refuse their calls since the do-not-call list doesn't apply to them and then launched into some tirade about people like me... I hung up on her. Then called back and hung up again.
Sixth call in as many days from as many different numbers. Never a message left. Toaday's call woke me up. I never answer out of state calls if I don't know at least the area code.