I am suspicious about why someone is calling my number and wanting to know about whether I have security around my home.

Asian sounding caller wanted to know about my security. Told him of the no call list kept insisting I was not on his list. Told him to delete me from his calls very argumentative repeating my security system. Again told him to delete me from his call list or I would report him to the national do not call list. Kept arguing about my security system. Hung up on him before telling him that I would report a complaint about him which I am just about to do.

The best thing to do is to get as much information and then lodge a formal complaint as he just wants to wear you down and argue.

First dead ari, then someone asking for Mrs. (homeowner).

I told them she is not home, they said it was for our security system, and what is my name.  I would not give it to him, he said but this is about the home, and the security system, again, I said you can reach her in 2 weeks, and I am not at liberty to discuss this with you.  Again he insisted on getting my name, I told him no.  So he said, what, you don't have a name, and I said, I just do not trust you and want to give you my name.  He asked me if I was related to the homeowner, and I told him it was none of his business.

This person has called me twice now and when i try to call back, it's a busy line.

Same thing here!