Customer satisfaction rating

Flipkart/allen Solley— 6IN aluminium duct pipe chimney exhaust pipe

I have ordered a product amount has been paid from card already but product has not been delivered and there is no response from flipkart and ignoring all my calls and requests. How I can proceed to get the product delivered. Because of this improper delivery, my another product which is dependent of above one getting unused and installation engineer not ready to come now. Total 15000 INR loss for me.