Myntra.com — Wrong product delivered, exchange refused

Website: Myntra.com

I ordered Crocs Sandals from Myntra on 7th December and they delivered a completely different model, I didnt even remove the product seal and now the Myntra support is refusing exchange saying the product I am trying to exchange is different. This is not my fault and Myntra is not exchanging or replacing the product. The product price and already increased now and myntra is refusing to exchange it, give a coupon for the price difference or give any solution. I am looking to get either the same product I paid for compensation for the price difference.