Flypdeal — wrong product fake website

I had placed an order for the smartband bracelet (Smart watch) on the official website of flypdeal (Flypdeal.com) after a week or so i received a parcel from the delivery company named ‘delhivery’ and the courier boy asked me not to open the parcel before giving the cash so i paid an amount of 2530, he took the amount and he left my place. When i opened the box i see a cheap digital watch of worth less 100 rupees. When i try to call back to their respective given mobile number (Ph no [protected]) that was mentioned in the invoice there is no one to answer the call! I want a severe action to be taken and refund my money back!