Global chat needs a report button and permanent block or mute button
Both Moderators in chat, as well as a Report button were suggested. Moderators in chat was declined and simply will not happen.
The report button was left un-commented on, so it may be implemented in a future update.
Until then, please refer to the below question/answer.
There's a lot of vulgar language in the public chat, can the game developers fix it?
Here is a response from the Moderator Hoodiee about this issue:
"Thank you very much for supporting Castle Clash. We are still in the process of upgrading our chat system but are currently unable to resolve this issue. Until we have a solution, we urge you to ignore these players if you encounter them in the game. Once our Chat system has been upgraded, we will be able to severely deal with vulgarities."
So in other words, your only options at this time are to mute the players by pressing the speaker button to the left of their name, pause the chat, or not use the chat all together.
I really enjoy the game but the global chat is horrible! I suggest a filter which would automatically mute people that use certain words. You can even find someone to ask questions to because of the immature and disgusting conversation.