Levi's India — Levis 512 black jeans

I purchased levis 512 black jeans from Amazon on 10-Oct-2022, and only after four months of wearing, It developed a tear in the crotch area, clearly a product quality issue. Last month the day it tore, I filed a complaint on the levis India website, which they ignored.
I was a faithful customer of Levi's, and 512 is a fit I love. Usually, levis jeans last me for at least a year and a half without serious damage. Only a bit of colour fade happens. But this time, I was surprised to find my jeans torn. I thoroughly follow the instructions of the company and handwash the product in cold water.