Call or text (914) 825-5498 and we will arrange a secure way for you to enter the new card yourself. We never take card numbers over the phone or by email, and you should not give them to anyone who asks that way.
Worth doing if your card expires between booking and your event: the balance is charged to it 30 days before, and the hold is placed shortly before shipping. If the balance is still owed, you can also pay it with the new card from your event page — that card then becomes the one on file.
Didn't solve it? Text (914) 825-5498. If it's your event night, lead with that — those go to the front of the queue.