Had something similar happen to me at Fette Infiniti in Clifton, NJ in December 2017.
Went to go in to inquire about 2018 Q50 Red Sport. I was trading in 2015 Grand Cherokee Summit W/ Hemi.
They gave me a ridiculous number of over $3K DAS with a very high monthly payment. My Credit was and still is Excellent.
I was very polite and didn’t sound like a smart ass with the negations but long story short, they let me walk and never once adjusted their price.
Ended up going to Flemington Infiniti a week later and got what I wanted with only 1st month payment DAS. I used the website TrueCar and had the dealerships contact me. Did everything through email and got competitive numbers that way. I guess they knew that lead from True Car also means they are competing with nearby dealers so they know right off the bat to give the best numbers.
I’ll be giving Fette another shot only because I have some leverage, where I can tell them I went to them first last time and took my business elsewhere due to high numbers.
Edit: I also got video from rear facing dash cam where all these people are looking over the Grand Cherokee for trade in inspection. It was a VERY nice looking car. One guy can be heard saying “Why is this guy so paranoid?”. They took it for a very thorough test drive as well. I know they liked it.
When I went to Flemington Infiniti. We agreed on price for Q50 and Grand Cherokee trade in price. They never looked at it or test drove it. We agreed on everything via email. I just sent them a picture of it.