2010 AUDI A5 Fuelpropulsion System Problems

WHILE DRIVING ON THE INTERSTATE MY CAR STALLED NEARLY COMING TO A COMPLETE STOP, THE ENGINE LIGHT CAME ON AND I WAS SMELLING GASOLINE SO I HAD TO BRING IT TO THE NEAREST MECHANIC AND THERE IT WAS DIAGNOSED AS A FUEL INJECTOR LEAKING WITH MULTIPLE CYLINDER MISFIRE DETECTED. AS THERE IS AN EXTENDED WARRANTY UNDER AUDI FOR FAULTY FUEL INJECTORS, I TOOK THE CAR TO AUDI TO HAVE THE MANUFACTURER DEFECTED FUEL INJECTOR REPLACED UNDER WARRANTY. HOWEVER, THE ORIGINAL MECHANIC CLEARED THE CODE FROM MY CAR'S SYSTEM WHICH CAUSED THE ENGINE LIGHT TO TURN OFF. BECAUSE THE FAULT CODE WAS CLEARED BY THE INDEPENDENT MECHANIC, AUDI IS REFUSING TO FIX THE FAULTY FUEL INJECTOR UNDER WARRANTY EVEN THOUGH I HAVE DOCUMENTATION WITH THE FAULT CODES THAT SHOWS THE FUEL INJECTOR WAS LEAKING AND THE REASON MY CAR STALLED. THE AUDI SERVICE SPECIALIST TOLD ME THAT I WOULD HAVE TO...