409-737-6013 called me and left no message.  I called back using *67 before the number to make me anonymous to them.  An answering machine said, "Press 9 to be removed from our list."

I blocked the number on my phone system.

A user in some other sites says that it is someone saying they are monitoring your credit card rates and can help you lower your CC rates.  I do not even use my credit card so no reason to be calling me, right?  Scammers.

This caller has been bothering me for days, but when I answer there is no one there.

Received the call at 1:57pm.  We have the entire 402 area code blocked.  Actually, we have most all Florida and Texas area codes blocked.
Our phones do not ring when these criminals call.