If you don't use this opportunity to pursue a good discount on a BRZ, then you should also not pursue any career in sales.
Here's the first words I would use when I speak with the General Manager and nobody
other than the GM.
"Look, I'm really upset. The whole point of putting down a deposit as a consumer is to reserve something. Not only are you holding my money while I have nothing to show for it, but now you're wasting my time and I feel like I'm being yanked around, and that's not a feeling I appreciate. I accept that people make mistakes, it happens, but what determines their quality is not that absence of mistakes but how they are corrected. I'm willing to overlook and forgive this mistake if you can offer me a discount on a car that justifies the time I have wasted in this, and it has been a lot of time from my perspective. I would like a minimum of $2k off the purchase price I've previously agreed to otherwise I'd like my deposit back immediately, before I leave today so that I can give my tens of thousands of dollars to a dealership that will treat it and me with the appropriate amount of respect."
I did a similar thing when I bought my FRS. I specifically noted I did not want the "port installed options" which were like an extra $1k or so. I specifically documented that. When my car showed up it had the options on it (like the Scion rear bumper applique). They told me they cannot discount the car because of "Pure Pricing". I said, "well then, I don't see any other option than this... You can give me $1000 more for my trade in than we previously agreed to and I will overlook this mistake and take the car." Had I not known someone who had the ear of the GM, I probably would have not got the extra money for the trade in and I would have left there with my deposit and given my money to another dealership. It's a $25k car from a
dealership, not a little fly by night parking lot sales group. If they can't respect your bottom line then absolutely, under no condition should you respect theirs.