Call came from 801-571-3965... local number, but unknown to me.   Answered it.   Time elapsed responses from caller with slight echoing.   Male voice said from Green Energy, I googled and asked where calling from heard no response...then I said, oh I see California.   I then asked to be put on the do not call list.   He delayed then said o.k.   With all the delays, I wondered if I was talking to some kind of computer generated prerecorded script.   I may decide to block that number.