Rencently, I upload a new product on Amazon, and send the inventory to their warehouse. and yesterday, I got a lot of orders(more than 10). they make me very happy, while that is a trap. all these orders are from the same city with different buyer account. then Today, all the parcel was returned with negative customer experience rate 100%!!! my listing is inactive now! and the keywords they left on the voice of customer is similar. It is obviously made the competitors. So what can i do to denfend my legal rights?