Reliable Buick GMC

Actually i saw the car on internet and contacted the sales guy, he responded very quickly. when i went there after a long journey, cars looks good and even i went for auto inspection, then i came to know that car has some repairs to go. when i asked the sales manager he said it will be factory covered warranty(after buying car when i went to repair i came to know it's not covered under warranty), and it's my mistake to believe that. I thought thats fine. Here you go main thing, I got pre-approved loan from couple of banks which were applied by dealer itself. so i went there picked the car after signing the pre-approved loan documents. Here is the funny thing they called me after one week and said your loan is not approved and asked to return car back(distance between dealer and my home is 200Miles). I dont know what the [violative content deleted] these guys did, i got something around 15 mails from different banks saying that your loan application is denied. The sales rep from the dealer said to me that they are sending loan application for 4 banks, they never said that they are apply for 18 banks. finally I lost my credit score badly, due to this [violative content deleted], and i got the car paid off with help of my friend.