Boat — BoAt Warranty claim rejected due to Damaged product

I had mic and connectivity issues in the NIRVANAA 751 i brought from boat official website. I proceeded to claim warranty and gave the product to delivery partner and now after 5days they mailed me that my claim has been rejected due to product damaged. I am sure the product wasn't damaged when I gave to the delivery patner for warranty process shipment. I need a replacement for the product. I don't want the damaged product as return ( which may be damaged during the process of shipment or service fulfilment centre ) .