No joke: 15 years ago, when I was riding DB trains regularly, I got whole packs of refund forms. Took a while to find someone who would not refuse this request. I built a rudimentary transparent template in latex that had my name, address, etc. Pushed a whole pack into a printer to fill out most of the forms, leaving only the date and train to be manually inserted. My trains were always delayed, so this saved a lot of time.