Your payment(s) has either been declined by Facebook or refunded according to your own will.
You should have received the money back in either case. 
Please check your email for further details as a letter with all the info has been sent to the email attached to your Facebook account.

All the payments made in our game go through Facebook. Facebook manages the declines and refunds of payments. Please contact Facebook Support if you still have questions on the issue. You can also check your payment history here.