Called my office line, didn't pick up. No message. Blocked from further contact. According to other comments, it's spam for alarm systems installations.
I live in exile and am pursuing justice. I've seen intelligence operations ad nauseum and I'm sure this number is related to just these types of operations.
This is a bot for something calling themselves Home Security Systems. They are offering to put a sign in your front yard for free saying that you are covered by their system. What their end game is, I don't know. I do know that I have asked to be taken off their call list three times now by pressing whatever I was supposed to press. I've informed them once that I rent and wouldn't be interested and was promised they would take me off the list. They lied. Please take these people out. And as for Rebecca getting upset because they hung up on her as a customer - you're not their customer if you haven't purchased anything.