Robocall by scumbags for identity theft trying to market energy savings.
Don't do business with them. Want your identity and credit card information. Do not press 2 to be removed, just confirms your number. Do you believe a company calling you illegally (if you are on the DNC list) would really remove you from their list?
Complain here https://complaints.donotcall.gov/complaint/complaintcheck.aspx?panel=2