Myntra.com — product exchange/return

I bought an item from myntra and when it delivered there was an option in myntra app that "collect insider points" i accidently touched the option. Then i am unable to exchange the item. There wasnt a warning message that you will be never able to return or exchange the item. Now i am stuck with an item that i will not be able to use in my entire life time. I dont want the money back, i just want to exchange it. Help me. I lost my money.