Hi Amelia,
I assume you are asking about [Bing Webmaster Content Removal Tool][1] [1]: https://www.bing.com/webmaster/help/bing-content-removal-tool-cb6c294d
For support with content removal, sign in to your WebMaster Tool account and create a Support incident there for your specific issue.
If the content is not yours, go to Bing.com and create a search that produces the cache issue then choose "Feedback" to have the Search team review that result.
Sincerely,
IoTGirl