Myntra.com — Exchange request declined

Address:	Kolkata, West Bengal, 700136
Website:	www.Myntra.com

Dear sir madam/,
This is a complaint regarding myntra.
I had placed an order for purple feather black pencil skirt on 18th may from myntra.com (Order #[protected]. The product was delivered to me on 23rd may but without barcode or tag (Which i realised during refusal). Upon receiving the product i tried on the product the same day and i found it was too small. I raised an exchange request for a higher size immediately. I put back the skirt into the same package just the way it was originally packed using the same myntra covers. The new order no.[protected] was created on 23rd may for the exchange item.
However the exchange was refused on 27th may on grounds of missing barcode and tag. I had contacted customer care and shared images of the product & packaging inspite of that myntra has been refusing the exchange/refund stating without bar-code they will not be able to re-stock product.
Why should i be penalised for myntra's negligence?
Please help
Thanks & regards,
Anindita upadhyay.