Caller ID said "marketing." Since I'm on the Do Not Call list and didn't answer. Then decided to return the call and tell them to f... themselves. Got a recording saying "press any number to be removed from this call list." I pressed a number and received another call a week later. Apparently, setting up a meaningless recording costs less than a mechanism that would actually stop unwanted calls. Interesting that you said this was the Security Alarm scam. Also got a robo-call (robo-calls are illegal) from the same scammers from 360-633-9455; got through to them and played along giving fake information. When I said I didn't own my own house, they said I didn't qualify for their free installation. Next time, I'll say I do own my house, give them the address of the local police station, and see how long it takes for them to ask for my credit card number.
720-315-7922 keeps calling to sell me a GE Home Security system. It is a robo-call so you need to press #1 to talk with them. Even after asking to be removed from their call list months ago. They just keep calling. Now, I alway press #1 so I can harass them back - just ask them about the services, cost, warranty, model number, backup power, service agreement, etc. Waste as much of their time as possible. They are probably on a clock and need to talk to so many respondents per hour. Maybe they will get the idea not to call anymore.
This number calls daily. They are a telemarketer and will not stop calling for anything. I am going to have a heartattack one day talking to these people and when I do, my wife is going to sue them.