Politeness Counts
Being in an interview gone bad should be turned into a driving force to motivate you further and most applicants forget politeness when they do their exit. Doing your exit from a failed interview, it is only prudent that you express thanks for the time and effort they have put into your interview even if it has gone the other way for you. That way, you can leave a good impression should you again give it another try with the same firm most importantly with the same people.
Though rare, a second time round application may work should your employer be impressed by the way you handled the situation in the past. A cool head should be norm and due respect given so as not to give the wrong impression from the beginning. It also reflects good character and who knows, they might even reconsider your application after they have exhausted the rest. With more and more people looking for jobs and with fewer openings, it truly is becoming a cut-throat business just to get yourself a job you deserve.