Sims 3 Store Item I don't want anymore

Not that I know of. I don't believe EA takes returns on the sims store but you can contact them directly and ask them

if in the event you need to contact CS

1.https://help.ea.com/en/contact-us/
2.Click on the orange NEXT button
3.Select a platform
4.Click on the orange NEXT button
5.Select a topic and describe your problem in a few words
6.Click on the orange NEXT button
7.Click Chat Now to chat with a Game Advisor