At first when I received a message from him, I was skeptical. Because I get many messages to get me buy something. When I read the message, I realized that he was referred by the service by which I made the down payment for the house. When I spoke with him, he was very kind and helpful. At the second call, I bought the security system for the new house through him. It would have been very difficult for me to research and choose the best security system on my own without his knowledge.