In my rush to return my ipod... I didn't format it, does Wal-Mart do that?

or do they send it in to be “refurbished”? I really hope they dont just reseal the box and sell it… I mean, i had all my email going to it, for all my email accounts, banking information etc. I returned it so I could get the new 32GB for the same price that I received the gifted 16GB for. I was in such a hurry and it was the last day I could do so (15 day return policy) and it was like 11:00 at night.

Thanks!