Amazon India — Did not get the parcel yet and they are not refunding money

Address:	Pune, Maharashtra, 411045
Website:	www.amazon.in

I order a bag from amazon.in of seller Bagsy Malone on 28th October, 2015. On 2nd Nov, in the morning I got a message that the parcel will be delivered today and in the evening I got the delivered message. But I did not get the parcel yet.. It has been a month. Now that when I asked for the details like the signature they have which they claim as mine, name and number of the delivery boy who had delivered my parcel(I don't know where), they are not providing me the details. My address is correct because that address is saved in my amazon account. And I have received other parcels on the same address. I raised a refund claim but they have rejected it. If they are not paying attention to this issue, they are not even letting me to investigate it.