Firstly, I'm asking these questions to see if there will be a real answer. Don't be a douche and get sarcastic okay?
So with that said. No shit you take it back to the store to return it, but this is a online currency, meaning you buy it online, So if the vendor decides they dont want to refund you there's nothing you can do about it right?
If amazon says they refuse to take back your item what can you do now? You can easily leave negative feedback. Shouldn't differ with bitcoin.