Quizilla word limit?

Hey I'm on a site called quizilla and when you message you get a character limit, like a limited amount of words you can write, well I received a message and it said -847 characters that means they went over the limit, how do I do this I cant fucking write back to them because I don't have enough space.

That's something you can't bypass. Just type your response in multiple messages, or try to shorten your response.