User Activity

if I'm a buyer and buy things on eBay on behalf of my company. How do I add my company's GST number into the bill and how to confirm that bill will be with HSN code?
I had bought a tv on eBay and seller shipped it but the seller said that FedEx does not take Punjab order and item come to me. then I rise case on eBay. no eBay representative either call me for confirmation on my complaint or call FedEx about my par...