I tracked down one of these robocallers once. I'd been getting multiple calls a day from the same number. The number was tied to a business name, which had an

I tracked down one of these robocallers once. I'd been getting multiple calls a day from the same number. The number was tied to a business name, which had an old domain name registry in some online index. From there, I was able to find the original domain name purchaser name and phone number. I also found his Facebook page, with poor privacy settings - and a few other details about the guy. So I gave him a call. He was very surprised to get a call - but listened, and accepted that a phone call wasn't where I'd stop if his calls continued. They stopped that day.