2014 AUDI S4 Service Brakes Problems

BRAKES LIGHT CAME ON AND PADS ARE WORN AND ROTORS ARE WARPED AT ONLY 16,000 MILES. HAD THE AUDI DEALER IN WESTLAKE VILLAGE, CALIFORNIA REPLACES BOTH PADS AND ROTORS. SEVEN MONTHS AND 8,000 MILES LATER, WHILE DOING THE MAINTENANCE OIL CHANGE, A DIFFERENT AUDI DEALER IN WOODLAND HILLS, CA NOTIFIED THAT BRAKE PADS ARE WORN AT 4MM AND ROTORS ARE WARPED. THIS WEAR OUT PATTERN IS BEYOND THE MINIMUM EXPECTATION OF THE LIFE OF THE BRAKES UNDER AVERAGE DRIVING CONDITION. BRAKES PADS ARE WORN TOO SOON, AND I DON'T UNDERSTAND WHY THE ROTORS ARE ALSO WARPED AND NEEDED REPLACING TOO FREQUENT. I LIVE IN SOUTHERN CALIFORNIA, WITH NORMAL DRIVING CONDITION, 60% FREEWAY AND 40% SURFACE STREET, I HAVE NEVER HAD BRAKES WORN OUT THIS QUICKLY IN ALL OF MY PREVIOUS 5 CARS. AUDI DEALER AUTOMATICALLY BLAME MY DRIVING CONDITIONS AND SAID THIS IS A WEAR AND TEAR ITEM. I FEEL...