Woman (I didn't catch her name) started by telling me they were conducting a survey to see if we were qualified for government assistance to upgrade our home. When I assured her that my 54 year old home has all the upgrades for efficiency, she started her solar spiel. Having some time, I answered all her questions like I was really interested (without disclosing any personal information). After about 15 minutes, when she finally caught on that I was just wasting her time, she muttered under her breath "that idiot!" and hung up. Her phone number is now blocked.