1. Check Email: Look in your email inbox, including your spam or junk folder, for a confirmation email or receipt from the retailer or seller. Often, e-commerce platforms and sellers send digital receipts to the email address you provided during the purchase.

2. User Account: If you created an account on the retailer's website or platform at the time of purchase, log in to your account. There may be a section like "Order History" or "My Purchases" where you can view and download your sales receipt.

3. Check the Packaging: If you made an in-store purchase, your sales receipt may be provided as a physical copy along with your purchased items. Be sure to check the bag or packaging.

To return an item, Ensure the item is in its original condition with all packaging and accessories intact. Contact customer support via their website or hotline, providing purchase details. Follow their return instructions, which may include packaging and affixing a return label. If required, ship the item back using the shipping method. Once received, the seller will inspect the item and process the return, issuing a refund or replacement. 

You can specify the shipping destination for your order during the checkout process when making a purchase online. It's essential to provide the correct shipping address at this stage, as it determines where your order will be delivered. Retailers often offer various shipping options, so review and select the one that suits your needs. If you need to change the shipping address after placing the order, contact the retailer's customer support promptly.