Calls all the time but I never answer because I am with clients.  Never leaves a message.  Now I know to never answer.  Caller ID says NATIONAL CTY CA

When answered, I had the same experience as the "Receptionist."  a man asked to speak to whomever handles the visa or mastercard accounts for business.  The man said he wanted to come out and review our records to see if we'd been overcharged.  What???  This is highly suspicious.  No bank or credit card company EVER offers to come to your premises to review your records.  Do not give them any information.

Called and asked to speak with "whoever handles the credit card processing account."
I have never heard of such thing. I placed the lady on hold and she hung up in a matter of seconds.

Called, hung up when I answered

Rang and hung-up when answered.

Asked for me by name.......When I asked who was calling.......they hung up on me.