Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

There may be slight variations in hours for each warehouse. We recommend that you view the location information for a warehouse near you using our Find a Warehouse feature.

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

This is a temporary hold that assures Costco will be paid for fuel dispensed. The "pre-authorized" amount is approved by the card issuer and may be up to $150. After fuel is dispensed, Costco IMMEDIATELY sends a "completion transaction" message to the card issuer with the actual purchase amount.

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

A chargeback is when a member’s credit card or financial institution rejects Costco’s request for payment or is disputing the charge from Costco on the member’s behalf. Costco.com will send emails to the address on the affected order followed by a mailed copy to the billing address on the order if we do not receive a response via email.

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

Many of the items from the categories below cannot be returned through Self Service on Costco.com: Special Order Kiosk items - countertops, custom flooring, garage doors, home organization and closets, generators, HVAC systems, …

Items returned through Costco.com will be refunded** - including shipping and handling fees - and will be credited to the credit card used to place your order. You won’t be charged for the return shipping. Select items require additional processing time before a refund is issued. **Limitations apply. See Costco’s Return Policy for details.