I need some expert help with this. I run a Chat channel on a server and someone else added a new chat channel trying to poach users to join there. I have banned them but they still bypass the ban with new IP.

Is there some code that will prevent my users to join that specific channel from within mine: Some like: on *:text:/join #Newchannel:#: { halt or block ?

Then also to check if a user from #newchannel is trying to join my channel to poach to block him from joining

I don't know if this is possible in mIRC so if someone has positive suggestions it will be highly appreciated. I am not a coder so please if you can help out with putting something together.