Called me at 9:00 this morning.  Annoying!

Same call and phone is registered with Do Not Call

called, rang once, hung up.. unknown caller.

Rang once then hung up!

They called once, hung up.

When you call back, a recorded messge states that you have recently visited one of their affiliated websites, and therefore they want to offer you a rebate card.

Then it prompts you to press 1 to receive the card, or 2 to be placed on their "Do not call" list.