Caller id says unknown. They have called a couple of times today but don't leave a message.

I have also received a call from this number.  I answered and no one said anything, they just hung up.

I keep receiving calls from this number...I decided to call it back because I'm on a job hunt and thought it was a possible employer. An automated person came on talking about a Walmart giftcard. I pressed 1 and asked to be put on their do not call list (I'm already listed with the National DoNot Call List). They guy said okay and apologized for the call.

I have had 9 calls from them in the past two weeks.No one I on the other end. Called back and automated system put me on hold. After 10 min. I gave  up.

a [***] sales call!
I warned them to not call again...