Brake Disc Pads problems of the 2009 Honda FIT

I bought a 2009 Honda Fit about a year ago and it only has 11557 miles on it. In just one day the breaks went bad. I had to just replace the front brakes. It was so bad they were metal on metal. Also had to have the rear brakes cleaned and adjusted. I brought it to the Honda dealership that I bought it from because I couldn't believe that a brand new car that only has 11557 miles on it would have to have the brakes fixed so soon. They couldn't explain it or couldn't give me any answers on the subject. I called many mechanics and they all told me that this shouldn't have happened so quickly and that Honda should have looked into it for me. Honda wanted to charge me $460. 00 and every other mechanic said it would be under $300. 00. I got 2 front disc pads replaced and the slides and pins cleaned, new front rotors and the rear breaks cleaned and adjust for $285. 00 at guercio's auto and truck repair. I just don't understand how a car with only 11557 miles on it has to have the breaks replaced. I do not drive my car crazy, I do not drive excessively like Honda was trying to imply.