Myntra.com — product not received but myntra app shows it has been delivered

Address: Udaipur, Rajasthan, 313001

I had placed an order for 'HARBORNBAY Men Coral Red Solid Polo Collar T-shirt'. The package was to be delivered to me 24th July which did not happen but even though I had not received the order, I got a mail and a message from Myntra that the product has been delivered. I complained about the situation to customer care but they are not accepting my complaint and refusing any help. So now, I have wasted the entire amount of my order and have received nothing!
I don't understand why should I suffer any losses even though I am not at fault in any way.

Order no.[protected]-5881703