Simply referring to the shipping, and not the time in which it arrived, I don't really see what's unusual about how they did that. I have never seen GMPP bars come in a box (whether bought directly at a dealer parts counter, from GMPD, or from various vendors). The denting would be the shipping company's problem, not WBS.
The time it took for you to get it is still an issue, but the shipping portion is not out of the norm.