Brake Disc Pads problems of the 2018 Dodge Durango

"brembo break pads" I purchased my vehicle in October of 2018, I was quoted for new brake pads all around at 9000 miles in June of 2019. After finding out about the manufacture warranty, I was told that I only need rear brake pads replaced now. (note: there is less then 1mm on rear pads currently and 4mm on the front pads) , I told the manager at rydell that, I believe the braking system is defective. I have never herd of replacing the brake pads on a brand new vehicle this soon. I called three different dealers and they find it weird that I have to change the brakes already with only 9000 miles on the car. Mind you, I am the first owner of this vehicle and when I purchased it, it had 300 miles on the car already. The manager, rick guzman at rydell in san fernando even went as far as to accuse me of racing my vehicle. However, shouldn't balding tires coincide with that accusation? everything on my vehicle is the same as it was when I drove of their lot in October of 2018. There is no way, after putting 8,700 miles on my own, that I should need to change all four brake pads on a brand new vehicle. And the dealer is now fighting me to only change the brakes in the rear. I believe all four pads should be changed out. With the rear pads at 1mm and the front pads at 4mm, something sounds really wrong. The vehicle is not even a year old yet !.