Flipkart — Flipkart denying refund against wrong model and misconfigured device delivered

Ordered a network attached storage of Synology from Flipkart.
The contracted model 1520+ is supposed to possess 8GB of memory (RAM) as per specifications laid down by Synology India.

Unfortunately, the device which has been delivered contains only 4GB of memory and that too came in a package mentioning "Cathay Pacific". The condition was bad and two latches were already broken in transit.
The item is seemingly sourced from outside India and hence the configuration mismatch. Also, the physical damage to the device cannot be accepted at all.

Despite sending all the required documents, images and system configuration export information from the device, the seller is repeatedly declining the refund, in spite of telephonic conversation and assurances from Flipkart customer care executives.

Instead, the seller is asking me to give my consent for sharing my Aadhaar details with some third party, which is a blatant abuse of my privacy. In no case, can anyone ask for such explicit consent from any individual.

Therefore, this is to inform you that since it's an expensive device and in any case, such a mis-configured and physically damaged product cannot be accepted by the undersigned. If the seller continues to decline the refund, I shall be forced to assess legal remedies against the particular seller.