I treat the client very badly

I treat the client very badly
The commercial just arrived and we have seen, then we went to look at a car and the guy did not take our eyes off but not a HELLO.
At the end we went to his table and he greeted us, we sat down and he always understood things that he had to close his mouth because I showed him evidence that he said he was not.
Superb but can not ...
0 sympathy and closeness towards the client.
The offer that has made us, we liked it but then it has taken out a sheet that we had to sign confidentiality agreement (just for giving me the quote on paper to read it at my house)
and that did not seem good to us.
We have gone to different dealerships and none of them have asked us to sign any confidentiality agreements.
We will not return 1. For the treatment received and 2. For that piece of paper that we had to sign without buying anything or even having thought about it.
As the uncle said he had 18 years of experience there and for a comment he has made it seemed not to be very parrot of the colors of the 500.
We have gone today 4.03.19