Myntra.com — Different men's boxers

This is regarding Order no.[protected]-5511103 which include a item named Urban Dog men's boxers blue checked. When i received product it's totally different in terms of Fabric, Color, and design and i have sent them images as proof but they said this is not returnable and that's it. What this mean if they are sending wrong products in the name of No return policy they should investigate and see customers proof. This is worst fraud being run by Myntra