Why did Cartoon Network take off Toonami and other great shows? (read details)?

So I don't always watch cartoon network but whenever I miss those cartoons I watched when I was younger like Ed edd, n eddy, grim adventures if Billy and mandy, dragon ball z, exc.I flip to cartoon network. But how "CN" is becoming I hate it, I'm 16 (i know weird I'd still watch cartoon but I dnt all the time) and I'm those guys who loves the days when I was younger like the tv days and cartoon days. I wish "CN" would put on stuff like Toonami and anime. Id really love that. ALSO is there anyway to contact them about this?