If you notice that your music has been added to a fraudulent Spotify playlist, you can report it via their Playlist Reporter Form.
The Playlist Reporter Form is designed to help artists report playlists that violate Spotify streaming policies, such as those suspected of using bots or engaging in other fraudulent activities. You can report playlists directly by following these steps:
Find the playlist in your Spotify app or on web player.
Select > Share > Copy link to playlist.
Paste the link into the Playlist Reporter Form.
Complete the prompts.
Submit your report.
To learn more about what is considered artificial streaming, check out this article.