I understand the companies position, however it sounds as though they still gave you a raw deal. Can the Teamsters help you out any?
I served on jury duty once. It was a funny deal because several of the jurers wanted to act like we were deciding John Dillinger's fate. (all it was was some drunk taking a pee in a park bathroom except he was peeing on the wall just inside the door and some little girls saw him through the doorway) It was a farce and I quickly said so.
Fortunately several others saw it the same way and we only had to spend two hours deciding he wasn't guilty of being a pervert. A couple of those people acted like they wanted to send him to the gas chamber.
In your case however, it sounds like maybe that company isn't so good to work for no how. Try to pick a better one next time.