They left an empty voice mail with just static noises and hung up.
When I called back, there was no ring tone except a voice that says "bye' and automatically hangs up.
This number called my office about Google listing. I said to remove the number from their list, and heard "No. No. No. laugh laugh. I'm sorry, I didn't hear you. No. No. I didn't understand you. Can you repeat what you said? No No No. Laugh. Laugh. Laugh." And this continued for a few minutes while I sat there in disbelief. Then they hung up.
They called me to claim I never responded to a piece of mail they said they sent me about renewing my car warranty. First off, I never received such a notice. Secondly, I do not own a car anymore, and haven't for a few years. Why do these bustards do this? Blocked the number, of course, but not before I found out about this, because I was on another line. They all deserve to be strangled. Another unlicensed, uninsured country heard from.