2016 Bmw X3 Lights Problems

BOTH HEADLIGHT LENSES ARE CRACKING AND PITTED ON THE INSIDE OF THE LENSES. VEHICLE IS UNDER WARRANTY AND HAS BEEN AT THE DEALER ON TWO SEPARATE OCCASIONS. THE 2ND TIME AT THE DEALER THEY HAD A REGIONAL TECH MANAGER CHECK THE HEADLIGHTS.THE CONCLUSION HE CAME TO IS THAT THE PITTING AND CRACKING IS ON THE OUTSIDE AND THEREFORE NOT A DEFECT. WELL, A CHILD COULD SEE AND TELL, EVEN BY TOUCHING THE FACE OF THE HEADLIGHTS THAT THIS IS ON THE INSIDE OF THE PLASTIC HEADLAMP ASSEMBLIES. I BELIEVE THIS IS A SERIOUS SAFETY ISSUE AT NIGHT, AS WELL AS A CLEAR MATERIALS DEFECT. I BELIEVE THAT BMW DOES KNOW THAT THEY ARE DEFECTIVE, AND SIMPLY DOESN'T WANT TO PAY FOR THE HEADLIGHTS. THEY SAID I COULD REPLACE THEM MYSELF IF I WANTED TO AT A COST OF $5000.00.