I usually say "no hablo ingles". Then when they start speaking in spanish I say "Sorry I don't speak spanish". Then I ask "spechen deutsch?"

Then I just ignore them. It's sorta like the same dude when I would come out of the office building downtown for lunch he would tell me that I have a nice tie, he found Jesus, he has a rough life and can I spare some change. Every single day the dude would ask me for money. Finally one day, I printed off the unemployment website their form and brought a pen with me. I gave him the form and the pen and a pre-stamped/addressed envelope.

The dude asked me again the next next for money. I shook my head and kept walking.