Flipcart — About refund my amount

Address:	Chennai, Tamil Nadu, 600023
Website:	flipcart

Dear respected sir,
My self praveen kumar and i boughat a mobile phone frome flipcart by paying 12999 rupes.First time he send me a empty parcel then i complane to flipcart regarding issu, then they provide me a replacement and i accepted the replacement product in condision that is same day delivery because tomorrow i went to kolkatta doning my some urgent word .Now i have not recive any courier call for deliver then i call the coustmer acutive to cancle my order because i am not avillable on my location and they cancle the order but they didn't refund my amount.They told me that there is a heigh no of returns so i didn't fullfill my request.Now sir flipcart took my money and my product both they have to return my money because i already pay for the product earlier but they didn't return my money.please solve my problem