Fairdealstore - Defective and duplicate product

I am a resident of Bengaluru, and am a fairly broke college student living alone. I had seen an advertisement on Instagram of The Bose Soundlink Mini II being sold for just **** rupees. I immediately went to the website, and seeing that the deal was too good to pass on, purchased one, on the *th of August ****. However, I received no online bill of purchase, which seemed suspicious. I received the package within two days, on the *th of August, ****, and on opening it, found a battered old box with a broken duplicate 'soundlike mini II'. I tried contacting the delivery office but they had no number to contact the source. There was no from address, only a return address - ***BGALI* Hanuman Road Connaught Place--Delhi-******