No one is there when I answer.  If I am not at home - there message is a constant series of beep-beep-beep, etc. It goes on until it uses all my message space and no one else can leave a message.

Just got a call from this number....when the person on the other end started their "Good morning and how are you??" speech, I asked "who is this, please?" They said with a huffy voice 'Well never mind then if you are going to have an attitude like that." I said 'F&k you' and hung up. No idea what they were trying to sell.

"new energy" home insulation solicitation.

Telemarketer ... "home energy audit" scam.  Had my name and address.  Spoofed caller ID.  No caller name info.

Constant calls, every other day no ID and leaves no message