My wife recently got a targeted offer for AMEX Delta with no language limiting signup bonus to new customers. I applied for the card and again, no pop-up warning that she's had the card before. AMEX called because she already had 5 cards, but gladly approved it after she closed one.
Now AMEX says they decided not to give her the signup bonus because she's churned the card twice before, and even though the T&C doesn't say new users only, it says they reserve the right to modify or withdraw the offer, which they're doing because she's abused it. This is for AMEX Delta Biz if it matters.
Has anyone else had something like this happen? Any recourse?