Instructions
Press on the "Mini-games" option in the top right of the game window.
Press the "Spin the Wheel" tab at the bottom of the wheel to take any free spins you may have; you will be told onscreen if you need to buy more spins.
Click on "Spin the Wheel" and choose how many spins you would like to buy; there are three amounts to choose from.
Click on "+ Mall Credit" in the pop-up window that appears.
Select the amount of mall credits that you wish to buy and click on "Buy With Facebook Credits."
Select the method payment you wish to use from the list on offer. Press on "Continue" and enter your personal payment details. Press on "Complete Purchase" and the mall credits will be placed into your game account. You can now buy extra spins using the new mall credits.