Costco Customer Service
- (800) 774-2678
- (800) 955-2292
- (855) 620-7579
- (800) 220-6000
- (888) 426-7826
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Costco Wholesale Corporation is a large membership-only warehouse club. It was founded by James Sinegal and Jeffrey Brotman in July 1976. Its headquarters is based in Issaquah, Washington, United States. Costco Wholesale specializes in retailing a wide selection of merchandise including arts, computer software, home appliances, hot tubs, and jewelry. The company owns more than 700 warehouses in the United States, Canada, the United Kingdom, South Korea, Australia, and other countries. Most warehouses have gas stations, pharmacies, and garages. Available payment options are Visa, MasterCard, Discover, and PayPal. Buyers can also use Costco Cash Cards. Costco Wholesale Corporation accepts returns within 90 calendar days of purchase for a full refund.
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