All guest payments are one-off card transactions and are not linked to a PayPal account, so therefore all refunds will go back to the card used to fund the transaction. Even if the card is cancelled it will go back to the card issuer. Normally card refund takes 3-5 business days but some refunds to credit or debit cards can take up to 30 days depending on the card company involved.
So in this case please monitor your credit card account.
