My brother was in the market to buy a car. He pref...

My brother was in the market to buy a car. He preferred Corolla S version, Toyota of Richardson is the most closest location from my place. The whole car buying experience was an absolute nightmare! We spent a whole day looking at cars which included over 4 hours of going through the financing process. The car was financed by my brother & dad together. Since they have 0 credit, the financing was approved with a 22% interest loan. My brother was ok with this since he was going to pay in off in 6 months. We were never informed of the "loan interview" process. After we got the car home, 3 days later, the bank called my brother to inquire on the financial questions (Please keep in mind, my brother is the primary & my dad is the secondary financer), they asked to speak to my dad which they weren't able to since he had to fly out of the country due to falling ill suddenly with no medical insurance (the medical costs without insurance is yet another argument to make). We advised them of the situation & they said the loan will NOT get approved. We were shocked to hear this!
How can one dealership verify ALL financial documents, sign the note & release the card without the loan getting approved? Isn't it common sense that you validate the documents with the person sitting right in front of you? Or is it wise to verify the information with a person who can claim to be just anyone??
My brother started receiving threatening calls from the dealership from various sales men, managers, the matter got completely out of hand. I got the customer service manager involved, Ms. Kim, who was probably the only nicest person I worked with at this dealership. Even after spending all of this time working with her & the finance director, it all resulted in us returning the car back to the dealership & the deal being cancelled as if nothing had happened.
I am glad that we went through this experience because it had taught me & my family a whole lot more on the fraudulent process completed by a dealership & their "so-called-bank" process of which they didn't inform us about, and not to mention since the car was taken back my brother ended up in saving over $10,000 in interest payment for a $12,000 car.
End conclusion: My father came back after hearing all of this nightmarish experience, we took our business to AutoNation dealership & now we have 2 brand new cars. My brothers car is at a 10% interest rate (pretty nice compared to 22%), and after going through such an awesome experience I purchased one as well from them. I am using my word of mouth review to make sure that I deviate as many people as I can from buying their cars from Toyota of Richardson.