2015 Acura ILX UNKNOWN OR OTHER

MY CAR HAS A INTERMITTING SHUT OFF PROBLEM THAT JUST RANDOMLY HAPPENS AS I AM DRIVING I HAVE TAKEN MY CAR TO THE LOCAL TEMECULA ACURA DEALERSHIP WHICH I EXPERIENCED HORRIBLE SERVICE AFTER THEY HAD MY CAR 2 WEEKS THEY COULD NOT DIAGNOSE THE PROBLEM THEY COULD ONLY SUGGEST A MAJOR TUNE UP AND CHANGING SPARKPLUGS COST OVER $500 WHICH AS THEY TOLD ME MAY NOT FIX MY PROBLEM. I WORTE ACURA CORPORATE THEY REFUSE TO DO ANYTHING I SIMPLE WANT TO REPORT THIS ISSUE MY CAR IS ONLY 3 YEARS OLD AND I SHOULD NOT BE HAVING THIS ISSUES WHICH IS VERY UNSAFE. THE CAR JUST CUTS OUT AND YOU NEVER KNOW WHEN IT WILL HAPPEN. I WILL NEVER PURCHASE ANOTHER ACURA THEY COULD NOT FIX MY PROBLEM WHICH IS THERE PRODUCT. I TRIED TO FILE WITH BETTER BUSINESS BUREAU AND I COULD NOT BECAUSE OF THE YEAR OF THE CAR.