My order was confirmed, but I just got an email that states that I received a refund. What does that mean?

One or more of your items may have sold out since your order was processed. But don’t worry! The rest of your order will be on its way and you have been refunded for the cost of the out of stock item(s) minus any applicable discount codes used on the order.Note: Refunds can take up to 2-5 business days to clear and 7-10 business days for the amount to post to your account, depending on your financial institution.