Myntra.com — the delivery agent cheated not delivered my product and marked the product as delivered

I have ordered 2 tops from myntra and the ordered products were paid on the day of delivery the agent called me i said him that i will be home in 2 hours. Then he gave me another mobile number to call i noted it down what he did is without delivering the product he marked it delivered but i did not received the product i tried calling him on the number he has given to me it was switched off and also on the number provided by the myntra!! But nothing worked i didnt got my product!!! Why u people provide authority to delivering agent rather than the customer?? I m being fooled by the delivery agent and even my money is waste!!!
I want my money refund!!