recording that says I was randomly picked for a $100 walmart gift card.  

Left no voice mail

recording stated if I take a short survey I would get a $100 walmart gift card, hung up the call

$100 gift card scam

Gift card scam. Called back and a message kept playing on a loop asking me to press 1, no offer to take off calling list. I pressed 1 and once a live person came on the line, I asked to be taken off their calling list. The woman I spoke with said she immediately took me off their list and to have a nice day. We'll see if I receive any more calls from these people.