This is Charter (cable, internet, phone company). They have done this to me in the past. I don't understand their philosophy! They call, do not answer when you answer, and do not leave a message! What they want you to do is call back then they try to sell you a bundle option or other things! The reason they can call is if you are doing business like have cable or have in the past had their service you have to give them your phone! So even if you are on the Do Not Call list they can call you. I think it cost them less money when you call them instead of having to pay long distance that's why they don't answer and they are just counting on people being curious enough to call back. I think this is a bad way to do business and if there where any other options in my city I would go with another company! But I can't so stuck with it all the time!