So, there seems to be a mix-up at Best Buy and I have received a reward zone giftcard for $15 that isn't mine (I don't think - I recently spent about $3K there on a new TV so I guess it is possible but the email was addressed to someone who isn't me). The code works, the question is do I use it? I don't want to screw anyone over but I also don't want to let a valid code go to waste!