On a website that has no message system, how can I report a troll who keeps bullying me?

@badminton First of all, it's not a "him", it's a "her" unless it's that pervert who stalked me before using the more feminine name "Linda Joy" now (I didn't think of that possibility, but maybe it is). Second... how? There is no block feature. I have already put up a question asking about that:

https://www.answerbag.com/q_view/3516059

@Crazychick Before opening the message, click on the flag. There is a block option. You can't access block when the message is opened.

@badminton How do you mean?

@Crazychick When you see a message from this person, click on the little flag to the right. You'll get a drop down menu with several options. One is block. Another is report.

@badminton I can't see a block option. Where is it?