I'm going to give my 2cents here if this hasn't been taken care of yet and if you don't mind.
If you cannot use /n whatsoever, then I would obviously ask in /assistance.
I think it's a bad idea that anyone level 5+ cannot use /n. This rule doesn't really help anything, doesn't stop abusing because higher levels tend to know more, plus there's always /mute [PlayerID].
As I said and everyone else said, except for 1 guy, use /assistance.