Sometimes purchases take a while to process and do not get delivered immediately. You may want to restart the game to enable a fresh connection to the server.
If the items you have purchased have not arrived within 24 hours, you can contact us by submitting a request here and selecting Purchase Issue as the topic. Please be sure to add your game account identifier and attach a copy or a screenshot of your order receipt from Google Play store. The transaction ID (looks similar to this - GPA.1234-1234-1234-12345) at the bottom of the document must be visible on the screenshot.
To resolve any purchase related issues directly with Google, please consult Google Play's support site here.
For information on available accepted purchasing methods please refer to this link.