What happens legally when a retailer sends you a console bundle instead of a game?

Here’s something interesting that happened recently: customers of online retailer Zavvi ordered a new game called Tearaway but the retailer mistakenly shipped out to them the game AND a (much more valuable) PlayStation Vita handheld console (see here).  They realised their mistake and have since apparently threatened legal action against customers refusing to return the goods.

So here’s a classic legal question for you: when you give someone something different to what either of you were expecting, what happens?  Who’s in the right? Continue reading What happens legally when a retailer sends you a console bundle instead of a game?