As Genius_at_work suggested, change the mode on the channel to +i (invite only) then those that you don't want out.
Also, you shouldn't presume that no one wants to help you when you only wait for about 5 1/4 hours. Many of us only get on about the same time each day, so a 24 hour delay is not unheard of, and in the sticky regarding postings, it states that you should wait up to a week for a reply.