Opinions on this situation, i'm fuming out my ears.?

It's not your fault but you will end up paying the consequences for it because it was under your number bottom line. That doesn't even sound right that your manger had you take the camera back from the customer. The customer is always right. I'm surprised the customer didn't take legal action because he has a right to. If I were you I would just drop it because of the fact that it was under your identification no. And be more careful the next time something like that happens.