It is a scam. They are trying to get you to answer yes during the conversation, then record that answer to use to try to get your personal information. Here's an article with more details. http://www.9news.com/news/crime/how-saying-ye ... ictim/394053174
Received call from this number no voice mail I do not answer phone unless I know who it is then I call back if they leave message other Wis I think Tellamarketer or no one important.