I'd say challenge it Chuck, even if you do lose (you have to be willing to invest in the headache though). Most people let things fly like this, but we're actually supposed to argue for justice. Haha, I'm probably making it sound like a bigger deal, but I've been in the same situation and I was advised to challenge it. I'm glad I did, even if I did lose, because it shows that I actually care. There is always a chance of winning! :D