As much as we appreciate honesty, without evidence I can't do anything.
Same opinion here. Imagine going to the police and saying "I did bad things!" without being able to show what you did and provide evidence. There's nothing they can do.
Honesty is good. But we're pretty much in the same position now.
Denied.
We appreciate the honesty, but without evidence to backup your claims, we can't do anything. If this happened, don't let it happen again and consider yourself lucky.