I know plenty of people don't know how to block people on stardoll. I have been having some issues with a group of 'cyberbullies'. They spam me with lies and things to put me down. The best thing to do is delete the messages without responding. Also block them. To block a person you have to go all the way to the bottom of their page and look for this.
If you are curious of the users to block them, please ask me. I am trying to be respectful and not give out their users. (it was multiple stardoll users  that ganged up on me all from Italy)