Maybe this helps?
I had trouble with the dealer not being able to locate the car I wanted. So I tried another dealer closeby. Without being a dick about it, I basically let the first guy know when the second dealer was able to find and deliver the car. Because really I wanted to give the first dealer the business. He couldn't get the car in question so I went with the second dealer.
Worked for me, I ended up with the right car at the right price. Had I stayed with the original dealer I may still be waiting. Ps there's no way I could have learned to love the blue color over DGM