Who called from 5136858773

Rang..left no message

Rang..left no message - same as Ron

Rang, left no message like above.  Called them back, though.  Automated response says "thank you for calling, but the survey is now complete."

I never answer unknown numbers, didn't leave a message. These people clone local numbers and carriers to get you to answer.
Black listing can get pretty big, so I create a white list of people I do want to talk to. If a message is left I decide if I want to add it to my list, then I also use my blocking tools if needed.