This has happened before, and I reported it. But now another person or possibly the same person is confirming roles that have not been confirmed on the Hercules story. Here is the link: https://www.mycast.io/stories/hercules
From what I've seen after looking at the story, these seem to be multiple people and not a single person who want to "confirm" their fake suggestions. If you want them unconfirmed, you could contact the creator of the story, but if he's inactive, I suggest creating your own and unconfirming any false confirmations and blocking anyone who does them.