When you buy something through iTunes, your payment method will be charged either at the time of purchase or within a few days.
Also, you might see several purchases grouped and billed together even if they occurred days apart, which is something that might be confusing, but in the end, the total amount of purchases you have been billed matches the ones spent in the app!
For more information, please visit the link below:
https://support.apple.com/en-gb/HT201359
For more useful information about getting the most from your Social Games experience, please visit http://smartsocialgamers.org/managing-social-games/ |  |