Flipkart — Seagate Portable Drive

I have ordered a seagate Portable Hard Drive through Flipkart. After I received the product, I tried to connect it with my computer its connecting. When I try to return it, there is no option to return because its an open box delivery. What the delivery boy is done open the box and took a photo and gone. When I try to connect it with my computer its not working. Then I registered complaints 3 times. But Flipkart saying they can't do anything. I have to contact seagate directly. I took seagate's Kochi authorised dealer number from their site and contacted. But its says Its not Seagate's number. I can't able to contact seagate company directly, Flipkart is not giving me the seller number and they are not providing me any support to resolve this issue. I have registed 5 compalints with them. Every time they give me invalid seagated customer care number and closed my customer ticket. Really pathetic customer support. Its a real cheating