i did not utter a word and so did the caller.
suggestion.
dont even pick up the phone

I didn't answer and they don't leave a message.  Probably a sales call.

Received a call from this number on my home phone, which has been on the "Do Not Call" list for years. I do not answer any calls outside my area code that are not known family or friends. No message left.

Doesn't say a word. Don't answer