Left no message but then called back with a San fransisco number...

Missed a call from this number, no message left. I know this is not a number in my rolodex.

It's a telemarketer trying to sell surveillance equipment. Unfortunately, I couldn't make out the company's name, but they also mentioned reports of break-ins and obviously tried to intimidate me by making it seem as though I could be the victim of a burglary at any moment. I asked how they got my number when it wasn't even listed and they hung up. Doesn't seem like they were trustworthy at all.

They called me several times, never leaving a message. When I called them back, no name or other form of identification was given, just a recorded message saying that I wanted to be taken off the call list I should press 1. Since I've heard about scams where they ask you to press buttons which then will be translated into something completely different, I decided not to do as told. It all seems very untrustworthy to me...

This number called me and didn't leave a message. I called the number back and it says to be placed on a do not call list for the number that called you press 1. It doesn't give a company name or even the option to speak with someone.