Lenskart - Poor customer support

I purchased eyeglasses order id no.#********** from Lenskart on **th November. After using it for * months, the blue cut coating has begun to come off from the eyeglasses. I registered the complaint and claim warranty. They want me to send some photos of the product. I sent the photos. They asked me to have the patience for ** hours but after passing * days. I made a call to Lenskart support team to know about the complaint. Now, they asked that they won't replace the eyeglasses. They may provide a discount if I buy new eyeglasses. This was the second time when I got cheated by them.
I purchased eyeglasses on **st October ****, after using it a few months the blue cut coating came off from eyeglasses. I registered the complaint, they asked me to have patience. At last moment they refused to replace the eyeglasses that's why I needed to purchase new eyeglasses. They only know how to cheat people and nothing else.