Ouch, that's pretty rough. As others mentioned, I'd be looking for a full refund or replacement. If they're not cooperative (and they might not be, it's hard to imagine this is a great shop), I'd leave them with the bike and contest the charge on my credit card. Not really an optimal solution, but it'll get you there.
The good news is that a lot of Cervelo dealers are running big end of the season sales. If you're in love with an S5 VWD (and I can see why you would be!), you can get a great deal on them. The nearest shop to me has them listed at $7K currently, multiple sizes available. Good luck, it's a beautiful bike!