Costco complaints phone number, email address & complaint form.

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How to make a complaint to Costco

Costco complaints, To make a complaint in Costco you can first make a complaint from the number 011-800-774-2678 given here. If you do not find a solution to your problem by phone, we suggest that you complain by email.

About Costco

Costco’s worldwide headquarters are in Issaquah, Washington, an eastern suburb of Seattle, although its Kirkland Signature house label bears the name of its former located in Kirkland.

Costco complaints Information

We have given you more phone numbers, email addresses, and contact form here so that the customer can easily complain in Costco. Which we have given from Costco’s website.

Here you can first Complaint By Email: email but email complaints will not solve your problem anytime soon. This process may take some time.

Complaint By Phone: 800-774-26780 to resolve your issue as soon as possible.

If you still can’t make a complaint by phone or email, we suggest you go to Costco’s main Official Website and fill out a contact form.

If you use social media, you can go to Facebook, Twitter, and Instagram pages and ask questions by commenting.


Costco Head Office address Phone number

You can also file a complaint through the head office address and phone number provided here.

999 Lake Dr, Issaquah, WA 98027, United States

Costco Corporate Office Phone Number: +1-425-3138-100

Costco Other complaints Information

Customer Service:
Online Orders: 800-955-2292
Customer Service: (800) 788-9968
Business Delivery: (844) 765-0251
Home Improvement Installed Products: (800) 607-6861
Pharmacy: (855) 620-7579
Photo Center: (877) 849-2730
Costco Travel: (800) 220-6000
Executive Reward Program: (800) 774-2678
Membership: (800) 955-2292
Headquarters: (425) 313-8100
Technical Support: (866) 861-0450

Costco Working hours

Mon7:00 am5:00 pm
Tue7:00 am 5:00 pm
Wed7:00 am 5:00 pm
Thu7:00 am 5:00 pm
Fri7:00 am 5:00 pm
SunClosedClosed is not connected with Costco complaints but we do provide phone numbers, emails, and addresses that make it easy for customers to complain easily and quickly.

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