YOU SAID:
I've been trying to contact you about your car extended warranty
INTO JAPANESE
車の延長保証についてご連絡させていただきました
BACK INTO ENGLISH
I've contacted you about your extended car warranty
INTO JAPANESE
延長された車の保証についてご連絡しました
BACK INTO ENGLISH
We've contacted you about your extended car warranty
INTO JAPANESE
延長された車両保証についてご連絡しました
BACK INTO ENGLISH
We've contacted you about your extended vehicle warranty
INTO JAPANESE
車両の延長保証についてご連絡いたしました
BACK INTO ENGLISH
I've contacted you regarding your extended vehicle warranty
INTO JAPANESE
車両の延長保証についてご連絡しました
BACK INTO ENGLISH
We've contacted you about your extended vehicle warranty
INTO JAPANESE
車両の延長保証についてご連絡いたしました
BACK INTO ENGLISH
I've contacted you regarding your extended vehicle warranty
INTO JAPANESE
車両の延長保証についてご連絡しました
it is unlikely that this phrase will ever reach equilibrium