Received call from this number, on caller I.D. display, said "UNKNOWN".
Called number back, rang, until transfered to voice mail, but message said, "Voice Mail Box Full".

Thanks for that info. I just got a call from the same, but didn't pick up and they didn't leave a message nor did I call it back. Thanks again

They are selling some energy audit and I told them take me off their list and that this was the second call from them  I am on the do not call list and they said it didnt apply to them as they are a non profit.  I screamed at them and threatend to have them fined and we will se if they stop pestering me.