Customer Abusing Return Policy & Damaging Inventory

Hello,

I’m facing a serious issue with a repeat customer who keeps abusing our return policy and causing damage to our business. I wanted to see if anyone has dealt with a similar situation and what actions you took.

The Issue:

• A specific customer repeatedly purchases large quantities of our products.
• They return most of them as "customer-damaged", making them unsellable.
• After returning, they buy the same items again, only to repeat the cycle.
• This is severely affecting our inventory, listing performance, and overall seller metrics.

Has anyone successfully had Amazon take action against a buyer abusing returns? What’s the best way to present this to Amazon for the strongest possible case? Any specific policies or strategies we should reference? We have tried to report a violation, but Amazon did it's research and took no action. Is there something else we could do?