Again, this is my first Xbox experience:
I added an Xbox store card to my account. I went to buy New Vegas on my console, and it said I needed to add payment options and tried to send me to the browser. Instead, I did it on my computer, where I also entered my credit card but assumed it would draw from my gift card first, because the card wasn't listed along the other payment options.
Instead, when I went back and looked at my balance, it charged my credit card, and I still have $25.00 on the gift card. What happened? Is it because it's a 360 game? How do I make it charge my gift card and not my credit card on the account?