If you placed the order online while logged in your Shop Your Way account, you should be able to see the purchase by clicking on your Rewards points in the upper right corner, then on View Your Account History. Since it's been three months (June), you will need to extend the date range that far back in the search section. Unfortunately, there may be a time limit on when returns and exchanges can be done. Good luck!
If I can help you with anything else, please consider adding me as your Personal Shopper: syw.co/adelinarosa Have a great day!