For questions about Tile Mart products or assistance with your Costco Next Tile Mart order, please contact our helpful Customer Service Team for assistance. You can contact us using the form below, by phone at 866-591-8453, or by email at support@costco.tilemart.com. We strive to respond to all customer inquiries within two business days. Our hours of operation are Monday through Friday from 7 a.m. to 4 p.m. PT. Please note that we are closed on all major holidays.