The consequence is that you are now upset and uncomfortable and you’d likely be uncomfortable in a group.

And rules are likely there to avoid tension and conflict ruining support groups dynamics and purpose.

I don’t think they had to spell out rules and consequences. In general iv you text someone you don’t know or barely know, you run a risk of getting into uncomfortable situation. Not just in a support group, anywhere.

You took a chance, he turned out to be kind of unpleasant. Lesson learned. I am not sure what you want to report him for. I don’t believe there’s anything to report. Just stay away from him