I am very sorry. I have just confirmed that the payment to ○○ had not been completed yet. I will arrange to pay soon after these holidays end. Can you please wait for a little more? I sincerely apologize for any inconvenience caused to you.
I'm really sorry. I just found out that I haven't completed the payment to you yet. I will arrange the payment again right after the vacation. Could you possibly wait a little longer? I'm so sorry to cause you too much trouble.