Finding a art school in Frankfurt

Recently I found out that there was a fine arts academy in Frankfurt. I was really happy at the news since I've been wanting to go to an art school for a very long time now. The more I compare myself to professional artists, the more I realize my artistic skills are really crappy and I really need some good teaching. However, when I tried to write to get some information, all I got was a very cold formal answer that old me that evening courses are only in German. No proposal for arranging anything suitable for me, nothing. (and when I tried to write in English I got no answer at all.
It makes me feel depressed to think there's not much I can do. How can I find what I am looking for?
(Their website is also in English. So one would suppose at least some of them speak English, but no, no way.)