Henry Brown Buick GMC

Went in to purchase a new SUV last week. We have signed papers and drove the car home. A week later we received a phone call stating that we needed to come in and sign new papers because our interest rate had gone up. We have asked the financing guy how could have they let us taken the car home if the loan wasn't 100% approved. He said "it happens all the time, I mean it doesn't happen all the time. Out of 305 deals we do a month it only happens to 3" Which one is it, it happens all the time or it doesn't? We just ended up returning the vehicle as we sure don't want to do business with dealers who mislead consumer into purchasing their vehicles. I believe that's called "consumer fraud" according to Arizona Revised Statutes. If you do plan to purchase from this dealer, please make sure you have 100% approval and refuse to take the vehicle otherwise.