I have a better idea. Join the user Fanatik, then she will more likely find you and tell you stuff. She attacks him more than me and Cristina I believe.

Hello!
In addition to blocking your account, you can forbid writing to a person.
Ie implement the "read only" mode in the chat.
and after a certain time, when several complaints are filed with the user, enable this mode on the player. at the same time it should work in private messages.
As an alternative, it is necessary to implement blocking accounts by the mac address of the network card and other mac addresses of the computer of the offender.
With such a lock, even changing the ip will not help.