Brand name & Product name Not Showing

Our Brand Name DESIZER are not searchable neither with brand name nor brand & product name. We have been facing this problem for a while now. We have been following up with the seller support for the past 3 Month with zero support from them, I have search my brand product keywords upload but showing other keywords product the reply is - that they have rolled out an experiment that improves the customer experience by showcasing products in order of faster delivery promises. Our ASINs doesn't come up in any of the results page, but our ads do show up! Also the search result has products from other brands with lower ratings & even longer delivery time. How can this be acceptable? Its not a generic keywords search, but if a customer is explicitly searching for the product with brand & product name how can they deliberately suppress the product? Is this even ethical? In a way Amazon is forcing us to spend on ads!? Anyone else facing this problem? Any suggestion how to handle this?

i have searching keyword but showing other keywords

desizer sunglasses for men designer sunglasses for men

desizer eyeglasses designer eyeglasses

desizer reading glasses designer reading glasses

very disappoint now i had waiting few day because very time face i will close on amazon account