If you need to check the status of your return, you can do it from "My account / My returns".

I have not received my refund

If we have already received the item you have returned, and you have not received the corresponding refund, see the section "I have not received my refund".
Please note that both returns and returns are refunded when the package arrives at our facility and shipping back to our warehouse is generally slower than normal shipping of your order.