Lenskart Vincent chase - Received Worst quality product

I bought * pair of glasses worth rs.**** by an offer called buy * get * on **st July. Firstly it looks good and I believed that it's worth the money I spent but after few days, I came to know that these glasses were made by very low quality frames and lenses. They mentioned this glasses have blue cut, scratch resistant, dust and water repellent and all, but nothing is true. Finally, one of the frames got broken within * months of delivery even after I handled it very safely. They cheated me by providing a worst quality product. I asked them to claim my warranty, they refused to do so. I really want my money back. I don't want to waste my hardly earned money for this worst product which can't be lasts for atleast * months. Kindly consider my request, this is my only hope