Instead of asking the Company for the document for redeeming any gift, you can use the following methods to show the authenticity of buying:
1. Brought from Store. If you have purchased the device from any store you can use the original bill or the email receipt to show it as evidence.
2. Purchased in Online Store or Over Phone. If you have brought online or over the phone you can check to find the email containing the bill or confirmation. This email receipt can be produced as evidence to redeem your gift.
3. Though Authorised Partner. In this case, you can produce the email confirmation or receipt that you may have received from the partner while making the procurement.