Zenimax Employee comment on reddit :
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I don't know how the customer protection works in your country and I don't know much about the law but if you're going to pursue something like this in where I live, the lawyer is going to tell you "LOL no".
Probably, and that's because no one is going to spend many thousands of dollars bringing a case to court only to get back the 20 bucks they spent on a video game, but that doesn't change the fact that they dun goofed.
Admittedly, it gets slightly weird when it's an ongoing service and the like, but in contract law, which governs these interactions..the OP (pending he didn't know it was stolen) has done nothing wrong. We're not even talking about consumer protection laws. (They'd definitely fall foul of that in Australia but that's a completely different matter).