Basically agree with Capt Callblock. Call came in at 1108A CDT, Caller ID showed "YOURSECURITY" and they left no message. They are now blocked. There are a number of ways to block calls depending which mobile operating system you have, Android, Windows 10 Mobile or Apple ios. There are also a number of reasonably-priced call blocker devices and phones available for landlines which do a decent job of blocking repeat calls from the same number or area codes. We have a call blocker device which stores 1200 numbers. The unit has been in service since January 2016 and is only about 20% full. Our daily Junk/Annoying calls have dropped from 8-10 per day to 1-3, some days none at all.
I just got a call from these people. They're using software to type in what they want to say so their voice sounds like an American and they're giving a common name Jim Thompson so people will trust them. It's clearly not a person actually speaking! They're wanting to give you a security system and it's a total scam! Hang up on these guys!!!