I'd like to know if the person who broke the window ever went to talk to a lawyer. You ask a question on a forum and all you are going to get is advice from a bunch of people whose opinions don't mean squat. If it turns out you are liable for the window, all the "advice" you have gotten here hold no weight at all. Either pay it and end it or fight it and get a lawyer. At least talk to one so you can find out what your REAL options are.