Reward card expired - DirecTV

I received a reward card sometime around May of 2016 for becoming a new DirecTV account user. I went on vacation in January of 2017 and was told by a vendor that my card was not any longer because it had an expiration date of 12/16. I had never noticed this on the card before. I researched this and found that a federal law passed in August of 2010 makes a gift card like this good for up to 5 years. I need this card deactivated or a new one sent to me.

This question, "Reward card expired," is about DirecTV channels, programming, equipment, and sports.