All I can do is echo all of the complaints here. They won't answer questions, they are rude, they hang up on you and no matter how many times you block their numbers they keep calling. I've reported them to FCC twice and now have called AZ Attorney General. Next time I might just have them meet me at a location (not my home) and have a very personal chat with them!!!!!
Going by Energy Incentive Program now. Have been calling me for over a year. File a complaint, only way this stops is if enough people complain! https://consumercomplaints.fcc.gov/hc/en-us