Caller ID said that caller was Bill Jackson. Of course it was 'Mike' with the Indian accent, selling Viagra and Cialis. Asked him he got my number. He said the U.S. Database. Number blocked.
They never leave messages. The calls do not origin in this country. They are made over the internet fro India so don't expect the DEA or FCC to help you. If you answer you will talk to someone with a Indian accent who will try to sell you viagra or the like.