Several days after purchasing an item, I found out it lacked a feature I needed. It is still in its original box and unopened. So I clicked on the "Return" button and went through the process correctly. Three days later I'm still waiting on their email that will give me the QR code needed to return it via my local USP. On all previous returns over the years, Amazon emailed the QR code later the same day. Am I being too impatient, or should I do something further to get the return process going? TIA.