Flipkart — Damaged and defective product received OD[protected]

I purchased Asus laptop from Flipkart with order id OD[protected]. The same was delivered on 15th Jan. but the laptop I received is damaged and defective. It is having dents/bumps in it and it is not at all turning on. I raise replacement request and daily I’m following up with mails and call atleast 10 times per day. But no one is responding properly. They are simply disconnecting my calls.