Agree with Khaner but you can ask the store if item was turned in. I've walked out to get home and find item(s) missing. Either someone placed back in a bin or they saw it drop and walked out with item(s). My loss since I witnessed staff counting and I bagged. Not sure how I missed and not losing sleep over it; I do pay more attention when checking out. (Sorry for your lost purchase.)
I would Suggest that you go back to the store and ask pacifically for that item that you don't have
No, people generally don't turn in things, it's on the buyer to make sure they have everything
Thanks! Your answer is awaiting moderation.