Got a call again with no message. It's annoying.

Someone has been trying to reach me from 571-546-2536 for days. When I finally picked up the phone, he offered a free-of-charge quotes on auto insurance. I tried to explain that I'm not interested, but he insisted to find out if I still owe the car I had few years ago (he knew the make and the model). When I told him that he's only wasting my and his time, he burst out: "F... you! I'll f... you! I'll f... you and your kid! You hear me?". Of course, I hung up - but my wife was very distressed when I told her about this ridiculous conversation. Now, I guess who was that guy and where did he find those info on me?