Once a service has been booked and confirmed, it isn't possible to change the payment method for the booking. To learn how to update your payment method for future bookings, check out this article. 

However, if you've just submitted payment for your service and your sitter hasn't accepted the booking yet, you can cancel your booking request and re-submit the request with a different payment method. Here's how: 

1. Navigate to your Inbox by selecting the conversation icon.

2. Select the Pending requests tab and then select the request you want to modify.

3. Once the request is open, locate the conversation and select Cancel & archive conversation, then Cancel & archive request. This will void your authorized charge.

4. To resubmit the request with a new payment method, select Unarchive on the conversation, then select Book.

5. Below Credit and Debit Cards, remove the card(s) on file  by selecting the trash icon. Add your new card by selecting Add Payment Method. 
 

6. Once you've selected your updated payment method, hit Request to Book to submit payment.