Wow, Mare, that bites.
Remind them that this mistake was of THIER doing, not yours.
We sometimes take a bus from here to Isle of Capri which is close to Tunica.
The Isle did that to one of the gals (we call us the biddy group-ha), because when we sign up for the trip our names are forwarded to the casino and they usually have cards ready when we get there. Somehow Babe's information didn't transfer over (her real name is Evelyn, and we think that probably had something to do with it), and she had a new card with a new number, her Free Play from previous visits but still goo was not good on the new card, and they wanted her to play on this new card to give credit to the bus outfit. And if I remember right, they had disabled her other card which she had played on for at least 3 years.
Now, we are talking about a very much smaller amount of play and Free Play, but still it mattered a lot to her. I think they did ultimately fix it for her, but not that day of the trip.
Hope you get it straightened out.