When you pay with your card, we will first set the money aside in your account to ensure it's reserved for that specific transaction. As a result, your available balance is reduced and the transaction will appear as pending.
Funds will only be leaving your account when the merchant confirms the transaction is complete and they are ready to receive the money from your account. This usually happens within a few days after you have made the payment and the transaction will then show as completed.
Your monthly account statement is a summary of all transactions resulting in a movement of funds to or from your account and only includes transactions completed within that specific month.