2.5 mil plus car

A "Bobby Webster" will call -- probably using a list to reach senior citizens and said to go to Walmart to get a $300 gift card and wait for further instructions so that I could claim my prize.   Gave me a fake phone number of 803 422 6953 but said he was in Queens NY.  He didn't seem to understand when I asked what kind of gift card.  Don't think he was American.  He was calling my mother's home phone so I think it's scammers targetting senior citizens.