I just got one too. I did not recognize he number, so did not answer. (now I am glad I did not!) they did not leave a message.
The Do Not Call list doesn't seem to matter anymore. I still get these spam calls on my land line, and have started to get them on my cell phone too. I don't think it has anything to do with signing up for Solar project or anything else! I wish I knew what to do about it.
Called asking if I am a home owner. Then dangled a huge energy bill reduction in front of me. When I told them I am not a home owner but would like to relay the information to another home owner and then asked for further information, they said they can only speak to a home owner and that they would have to let me go.