Dealing with a negative search result that won't go away is frustrating, but...

https://quebeck-wiki.win/index.php/How_to_Use_Google_Remove_Outdated_Content:_A_Guide_to_Snippet_Refreshes

Dealing with a negative search result that won't go away is frustrating, but you have more options than just waiting for it to vanish. If a publisher refuses to delete your content, you can still take control of your digital footprint