I think everyone is in agreement the 2nd TV should be returned.
Now, all you arm-chair lawyers ... it's time to start giving some SERIOUS legal advice (that wasn't asked for because the OP hadn't thought about this issue, yet) about how to actually go about returning the TV ... in a way that fully protects the OP from any further actions by Fry's.
How would YOU return the TV and MAKE DAMNED SURE that Fry's cannot charge you for anything whatsoever, not even any extra shipping, and cannot claim any debt, and cannot report anything on your credit report, and cannot sue you, and cannot charge you with a crime ... and cannot claim the TV was never returned even when it was (keeping in mind this is a business that is so disorganized and so incompetent, at least in the shipping department, that they would have shipped TWO TVs to the same person who ordered only one) ???