I have been charged twice for an app

I downloaded some app game points on my iPod touch and paid for it. It didn't come through on the app - it instead went to some 'enable Genius' page. So I went back and tapped on the install button again and it came up with "purchase this app?" and I clicked yes. I have now been charged twice for these points and I am NOT happy.

But my question is this: Does anyone have ANY idea how I can contact Apple for support because I have tried countless ways and nothing gets through. Yes, I have clicked 'report a problem' and it just takes me to the 'support' section where no 'reporting' is available.

Many thanks,