Flipkart — Missing product- order id- OD[protected]

My name is rahul i placed the order vivo mobile the amount is 10490 and i received the order yesterday but when i open the box mobile is missing inside only back cover and charger is available inside i called so many times but i did not get any response from your representative side and also the your executive hold the call more than 20-30 min when i frustrated i disconnected the call and again and again your people disconnected the call so many times this is not a right way to deal with any customer so please refund my amount i cant wait for long days its my harden money so I request you guys refund my money...