Competitor buying my inventory!!!

I've had a competitor buying up my inventory for 3 weeks now so I can not sell. They have placed thousands of orders. Nearly 100-200 a day. I have submitted 20+ reports and Amazon only ever replies with a generic response that its been taken care of and they can not share the results of the investigation. The seller continues to do it and I have no way of stopping it. I even filed a BBB complaint and Amazon responds with the same generic responses on those complaints. Someone help