bookmycombos com - Package delivered but below standard apart from the product booked and defective

On *th of March,**** I booked a KRX H* Action camera H*R Ultra HD *K / **fps WiFi *.*" ***D underwater waterproof, vide the Order ID: Bc********** from https://www.bookmycombos.com and received the same on *th of March, **** through Ecom Express but after opening the package I found a below quality defective Product not as per the booked one. Moreover I tried to contact them over Contact number as well as through mail as prescribed on the site but all in vain and no one from the seller or the site administrator contacted me.