Someone else's site is pasted through a saved copy?

Question

Google

A very strange situation has been observed for more than a year. Urls from another site are glued to the site, Google somehow finds them, such pages give 404, but they do NOT fall out of the index, and the saved copy leads to someone else's site. There is no such problem in Yandex.

Example: https://webcache.googleusercontent.com/search?q=ca...

Where to look: https://yadi.sk/d/NVhoTK0BRQl20w

And there are plenty of such pages: https://www.google.com/search ?q=site%3Aimpl.ru+%D0...

I already tried to block other people's URLs through robots, and delete them through "Obsolete Content" and "Temporary Deletes". Moreover, these tools also work crookedly https://yadi.sk/d/qYSjpxEGpS9AMA https://yadi.sk/d/qvQUAEIx5guIRA90% of requests are not approved. Nothing helps, and all new pages get into the index.

How to deal with it? Has anyone had a similar situation?