[Resolved]  Flipkart — gst setoff not available on flipkart purchase

We purchased mobile from flipkart where there is no option to submit our gst number. Now since we want to claim setoff of the gst paid on mobile, flipkart is not allowing the same. We need to insert our gst with vendor. Since we are not having any contact details of vendor, we can not contact him directly. Please help us taking gst setoff. Thanks in advance