Chase United offers not only valid for first-time cardmembers with new accounts

United OfferThis is what the offer looks like for the United Mileage Plus card issued by Chase. Their promotion is that you get 21,000 miles after you make a purchase using the card.

Back of offerIf you look at the back of the offer, they say, "The bonus offer is valid only for first-time cardmembers with new accounts."

United Mileage Plus activityHowever, I've found that they do not enforce this. I've received the ~ 20,000 miles from them 3 or 4 times. Here is my United Mileage Plus statement for the year showing that I received 20,500 points in February and then 21,000 points in December