It is most likely that your payment has either been declined or refunded according to your own will. You should have received the money back in either case.

 

If you haven't requested any refunds, please contact our support, and we'll do our best to help you resolve the issue.

 

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. 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.