My customer said they didn't receive their order but the tracking ID says it was delivered.

When the tracking ID shows that an order has been successfully delivered, it's common for a family member to collect the package without notifying the intended recipient. On the uncommon occasion that the package is either lost or stolen after delivery, your customer has the option to initiate a claim process with the delivery service to address the issue.

File a claim with USPS

File a claim with FedEx

File a claim with DHL