Start with an apology and a decision path
Say you are sorry, then say what you need and what you will do once you have it. A customer who knows the next step stays calmer.
Ask for evidence once
A photo of the item and the packaging is usually enough. Ask for everything in one message. Repeated requests for more proof feel like an accusation.
Decide quickly
Replace or refund, depending on stock and what the customer prefers. For low-value items, skip the return and let them keep or dispose of it. The saved cost of shipping often exceeds the item.
Handle the carrier or insurer behind the scenes
If the carrier is responsible, open that claim yourself with the photos. The customer should not wait for you to be paid.
Write it down
Record the cause on the ticket: packaging, handling or a defect. Photos help you show the supplier or the carrier.
Fix the cause
If several tickets mention the same product or route, change the box, add padding or switch service. The best reply to a damage claim is fewer of them.