If you no longer have access to the receipt sent to your email, you can find your purchase history by doing the following:
1. Click on the arrow-down button located in the top right corner of your Facebook profile.
2. Click on Settings.
3. On the left-hand side of the window, you'll see Payments. This is generally about three from the bottom of the list.
4. Click Payments. This will show any purchase you have made in the game.
5. Click the purchase that you are missing coins from.
Take a screenshot of your receipt and send it to us. Directions to take a screenshot can be found below: