I have brought a Apple Macbook air Laptop from amazon india on 2nd April,15. The invoice is Improper. The serial no mentioned in the invoice is just an barcode no. When I contact to amazon india for proper Invoice with original serial no they have asked for 1 -2 days. After the stipulated time they again asked for 2 more days. They are doing such for thing for 3-4 times. But still they haven’t provide me the original Invoice.Don’t know what to do?.