This is part of why I don't shop at best buy, their return policy is a PITA.I really try to.
But it can't always be helped.
I just returned something to Best Buy and they didn't want to take it back because it was after 14 days. Wow, it hadn't even been opened. I thought I at least had 30 days.
They did take it back since it hadn't been opened, but I will know next time to look elsewhere for whatever the item is.