Fellow asked for me by 1st name, asked how are you doing today? Hate that. Stated he was not selling anything (right), he was calling to make me aware as a service that there was government money available in California for homeowners for solar energy, and asked how much I was paying per month in my energy bill. I asked him if he was from Edison, he said no. I told him I did not give out personal information over the phone & was not interested in solar panels, then hung up.
I think these guys react based on the tone of voice. Most of us know the caller is unknown and likely we still answer because we are ready to tell them straight to not call anymore so with that the likelihood of our tone in voice is direct, on guard, ready and that is when they hang up! On the flip... think about it, easier to sell or get information from someone who sounds so pleasant and open. This guy who called tells me where he is calling from and I ask what he was calling about (in a more serious tone), he hung up on me. Even though, they still call every day with no response when I answer...so annoyed.