Well, after a phone call and a store visit, here's what happened:
The store manager was a little flabbergasted at what happened, and reasons that it is the Lexington store that messed up, given that the order was placed correctly.
They tried to offer many ways to get the bass back to Cincy, involving shipping the bass back to Lexington, then having them ship it to Cincy. Or having my mom take the bass to the Akron GC and having them ship it to Cincy.
In the end I said I was weary of shipping instruments around, and I asked if there was anything they could do to "sweeten the deal for my trouble" I said I was looking for another HSC, and they offered me 20% off any case I wanted. I went with a simple wood case and paid around $45 for it.
All in all, I'm only a little miffed that I have to wait longer to get the bass, and the GC store handled things professionally, even though the mix up was not their fault. I was happy they could somewhat ease the pain.