This is one good reason to buy software from Best Buy...
I talked to a manager about returning the game and they said that they usually don't do it, and only do so if the software is physically damaged, but they are willing to give me store credit in exchange after I told them about how crappy and buggy Civ 5 was... I was like SWEET! Bye bye Civ Dumbed, maybe see you in a couple years after all the users have done the beta testing for 2K/Firaxis and emptied their pockets on DLC. In the meantime, I have Civ 4 BTS w/mods to keep me at bay.
If you are also one who was scammed by 2K, if you bought from Best Buy, or any other store for that matter, it's worth a try to talk to a manager and get a refund/store credit. Also, if you are a kid I would recommend having a grown adult speak on your behalf so that it doesn't look like you are just pirating games.
I have to say that I'm lucky to get store credit and have learned my lesson. It's not like the good ol' days when software was functional upon release. If 2K wanted to do the right thing they would offer rebates to all it's customers that have to endure this garbage release.