Myntra.com — Product exchange put on hold for unethical reasons

Website: www.myntra.com

My Roadster Jeans exchange request has been put on hold. Today I got the message 'Out for Delivery' but the delivery guy did not even show up to exchange the products and did not return calls, and the website updates showing the reason is that the 'quality check for the original product failed'. I don't know how this is possible. I have the original products with all of the tags and receipts at home. Please make sure to resolve this issue.

Delivery guy phone number: +91 [protected]