Had an issue with Costco? Get a real response.
Costco is a chain of membership only warehouse retailers, offering affordable prices on bulk goods, plus groceries, electronics, and clothing.
The most common complaints at Costco involve staff mishaps, lost or delayed orders, long lines at check outs, lack of stock for promotional items, and concerns with product quality, like spoiled or damaged perishables.
If you have any of these problems, Costco customer support is contactable via phone (Mon-Fri, 8:00-5:00pm), online with live chat, by email, or in-person at any warehouse location. Logging an issue with support on the phone or in-person makes it more likely to be resolved quickly, as staff can easily help with product replacements or refunds. More complex issues, like lost orders or e-commerce problems may several days.
Any issues that can't be solved by frontline staff can be escalated to a manager or supervisor. Writing to Costco Australia's head office or posting publicly on social media channels can also help to direct attention to your issue.
When preparing to complain to Costco, ensure you have a reference for your order (like a receipt or email confirmation), any relevant dates and store/staff details. Keep a copy of any correspondence with Costco in case you need to follow up and escalate later.
How to submit a complaint with Costco
You’ve got multiple ways to lodge a complaint with Costco in Australia:
Phone: Call (03) 5316 7223 (Mon–Fri, 8:00am–5:00pm AEST). Have your membership number and order/receipt details handy so the team can log your complaint and provide a reference.
Online Support (chat/feedback): Use the Support bubble on the Costco website to message or chat live with Costco support staff during business hours. This is perfect for quick written complaints or follow-ups.
Email: Write to customercare@costco.com.au with your name, membership number, contact details, and a clear description of the issue. Attach receipts or photos for any product-related problems. Costco's Member Care typically replies within one business day.
In person (Warehouse): Visit the Membership Counter or Returns desk at your local warehouse. Managers are empowered to resolve most issues on the spot, especially refunds/exchanges under Costco’s 100% Satisfaction Guarantee.
Post: Address postal complaints to: Member Care, Costco Wholesale Australia Pty Ltd, 17–21 Parramatta Rd, Lidcombe NSW 2141.
Tip: Always note your case/reference number and keep copies of emails or chat transcripts. For online orders, keep the order number. For store purchases, bring the receipt.
Costco’s complaint handling includes:
- Issue is logged: Your complaint is logged with details (membership/order, store, date). Many issues are fixed immediately (e.g., tracking a missing order takes place while you’re on the line).
- In-person resolutions: Staff are empowered to refund/exchange, correct billing errors, and resolve common problems quickly.
- Escalation (if needed): Complex matters (e.g., staff conduct, large orders, e-commerce issues) go to a warehouse manager or specialist team.
- Expected timelines: In-store returns/exchanges take place on the spot. Most online/order issues see updates or resolution in 1–2 business days. Courier investigations or replacements can take a little longer.
- Communication: You’ll receive email confirmations and updates if an investigation is required.
- Typical outcomes: Refunds/exchanges, corrected charges, rescheduled/made-good deliveries, and occasional goodwill gestures where appropriate.
Common complaints against Costco
- Long checkout lines & busy stores: Peak-time queues, not all registers open.
- Product quality issues (food & merchandise): Fresh produce/bakery quality concerns. Occasional faulty tech/appliances. Usually resolved via refund/exchange.
- Online order delays & shipping problems: Slow dispatch, courier losses, limited communication from Costco.
- Customer service/staff conduct: Some reports of rudeness or poor handling at counters or exits (typically addressed quickly by managers).
- Membership & account issues: Auto-renewal surprises, expired-membership access, executive rewards queries.
- Pricing & stock: Promotional items selling out fast, stock variability, price-tag vs. register discrepancies.
- Warranty/service centres (e.g., Tyre Centre): Workmanship disputes or warranty confusion. Can usually be fixed once escalated to a manager.
Costco complaints submitted through Ajust
I shop at Costco because I trust the quality, so finding mouldy Turkish bread and green potatoes right before making dinner was disappointing. It completely derailed my meal plans and l felt let down by a brand I rely on. - Sofie
A simple shopping trip turned into an incredibly stressful experience when my husband and I were accused of theft at the checkout. We tried to cooperate and clear up the misunderstanding, but the way staff handled it felt confrontational and humiliating, especially in front of others. - Vishakha
I’ve been a loyal Costco member for years, so being spoken to sharply by a cashier over how items were placed on the belt caught me off guard. It was embarrassing, especially during a busy holiday period. Yes, efficiency matters, but basic courtesy matters just as much, and that interaction stayed with me. - James
I placed an online order weeks before Christmas for gifts, but the items never arrived. As the days passed with no delivery, the stress grew. All I wanted was some clarity on what had happened and a fair outcome, because missing orders shouldn’t become something customers have to chase endlessly. - Julie
How other consumers Costco complaints got resolved
Lost online order: A member persisted and cited their consumer rights when a courier lost a high-value item. Costco resolved the issue with a refund.
Advertised sale item out of stock: After a fast sell-out and failed notifications, Costco's Member Care offered a discount on a comparable model of a sale item.
In-store staff issue: After a member encountered rude staff, the manager apologised on the spot and addressed the staff member's behaviour. The member left satisfied.
- Ask for the warehouse manager: For anything in-store that isn’t resolved at the counter.
- Escalate within Member Care: Request a supervisor/manager review if your phone/email case stalls.
- Contact head office (corporate): (02) 9469 7999 (business hours). For written escalation, email customercare@costco.com.au or membership@costco.com.au for membership issues.
- Website feedback / social media: Submit via the website’s feedback form or post on Costco Australia social channels.
- Follow up with references: Keep a log of your communications with Costco. Reference prior commitments (e.g., “refund promised by [date] didn’t arrive”) to promote action.
- Australian Consumer Law (ACL): You’re entitled to a repair, replacement, or refund for goods not of acceptable quality.
- State/Territory consumer agencies: NSW Fair Trading, Consumer Affairs Victoria, QLD Office of Fair Trading, etc. can mediate unresolved disputes.
- ACCC: Report systemic issues or misleading conduct at accc.gov.au (note: the ACCC doesn’t resolve individual disputes but may act recurring cases).
- No retail ombudsman: For standard retail issues, use Fair Trading/Consumer Affairs.
- Small claims tribunal (last resort): NCAT/VCAT etc. can make binding orders; often a stated intent to file leads to swift resolution.
- Member Care – Contact: costco.com.au/contact-us (Phone (03) 5316 7223, chat/support bubble)
- Customer Care Email: customercare@costco.com.au
- Membership queries: membership@costco.com.au
- 100% Satisfaction Guarantee / Returns: see Membership Terms & Returns on costco.com.au
- Member Privileges & Conditions: costco.com.au/member-privileges-and-conditions
- FAQs: costco.com.au/frequently-asked-questions
- Head Office (postal): 17–21 Parramatta Rd, Lidcombe NSW 2141
Costco Complaints FAQs
What’s the fastest way to submit a complaint to Costco Australia and actually get a response?
The fastest way to lodge a Costco complaint is by phone, online chat, or in-store at the warehouse. Phone and in-person complaints are often resolved immediately, especially for refunds or exchanges under Costco’s 100% Satisfaction Guarantee. Online chat and email work well for written records and follow-ups, with most responses arriving within one business day. Having your membership number and receipt ready speeds things up.
What usually happens after you submit a complaint to Costco Australia?
After you submit a complaint, Costco logs your issue and aims to resolve it as quickly as possible. Many problems are fixed immediately by frontline staff, including refunds, exchanges, and billing corrections. More complex issues may be escalated to a warehouse manager or specialist team. Most online order complaints are updated or resolved within one to two business days.
What are the most common complaints consumers make about Costco?
Common Costco complaints include long checkout lines, product quality issues, online order delays, and membership or billing problems. Fresh food quality, faulty merchandise, and courier delays are frequent concerns, but they’re usually resolved through refunds or replacements. Some members also raise issues about staff conduct or stock shortages during promotions.
How do you escalate a Costco complaint if Member Care doesn’t resolve it?
If your Costco complaint isn’t resolved, ask to escalate it to a warehouse manager or a supervisor. You can also contact Costco Australia's head office or submit formal written feedback by email or post. Keeping reference numbers and following up clearly helps move cases forward. If the issue remains unresolved, Australian Consumer Law protections allow you to approach Fair Trading or a small claims tribunal.
You’ve done your part, now it’s time to hold Costco accountable.
Take the final step and submit a complaint that gets seen and responded to.