For this, you can log a case with Amazon to get the hijacker removed, or you can direct message the seller and ask them to leave, if they don’t then you can go with the case method.
To remove hijacker from your listing you need to first text them and ask them to leave your listing, or may be tell them that you’ll take action, another method is to log case with Amazon and ask them to remove the hijacker who is destroying your reputation.
You can report the Hijackers from Brand Registry Console but only if you are a Brand Register Seller Otherwise you can not remove hijackers from the Amazon listings.
If you are a brand registered seller on Amazon then you can remove the hijackers from your listing by opening a case with Amazon and providing the information about the hijacker.
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