If you actually call the number, it gives you an option to put your number on a do-not-call list. In fact, it's the only thing you can do when you call the number, soooo.... why don't you try that?
This is a scam. This robo-caller called my cell phone. The voice said they were offering a home security service--stating that a friend or relative referred them to me. That's a lie! I hung up right away so I didn't catch the name of the company.