Myntra.com — Not taking my product back

I have ordered a set of 3 Jockey briefs from Myntra. The color and pattern was different from what I ordered. The moment I received the order, I knew I didn’t wanna keep it. Now they wont take my product back because apparently under the item there was a description which said “Colors and pattern may be different from the actual product” Then why did you even put up that pattern and color instead of keeping the original product? I have paid 500 rupess just to keep something I dont like? That’s so not fair