This is covered under the Terms of Service Document
Cancellation of Orders. You may cancel an order by contacting us via email or telephone, per the “Contact Us” section below. Cancellation is not confirmed until you receive a response from our customer support team.
Due to the speed at which we process orders (as quickly as possible) we will attempt but cannot guarantee that we will be able to cancel an order you placed on the Sites. After you have placed an order, we cannot change it, including size or color reasons. Please make your selections carefully. Our customer service team is available for guidance and to assist you on selecting the best product to meet your needs.
Orders which have already been shipped (you have received a tracking number) cannot be changed or cancelled. Please see our Returns and Exchanges Policy in Section 13 below for return terms and instructions to send an order back for a refund, if desired.
Card Processing Fee. If you ask us to cancel an order after we have captured funds from your credit/debit card, (or after we've captured funds from your PayPal account or have financed your purchased through Affirm) 2.75% will be withheld from your refund to cover the cost of merchant card processing, which we do not recover when issuing a refund for a cancelled order.
LINK FOR FULL TERMS OF SERVICE