Myntra.com — Incomplete order received but myntra denied return as quality check failed according to them

Orderd a kurta set on Myntra. Bhama couture peach embroidered kurta set. But i recieved only top and NO BOTTOM. I complained the same and they told investigatin going on and finally saying quality check failed. I attached pictures and everything as i am clear from my end. They didnt provide any details also of the quality check fail as claimed. I need my return and refund.