Can I return an 3 month Xbox live gold card I bought at Walmart if I never scratched of the PIN number from the back?
Yes, I wouldn't see why not.
Probably, if that dosent work you can sell the code itself
If they won't sell it on ebay
They are very strict with policy on games, cards etc. You might want to call before you make the trip. Does the card have any information or number to call? It may be up to Xbox.
No I've tried, you gotta go through Xbox for a return