Oh my! I'm lost as to why not one person that you talked to said anything to you. Of course, I'm also the person who would let a complete stranger know (in a tactful way) that his zipper is down! I'm reminded of the time when I worked at a bank downtown (80's-early 90's). I was crossing the street and a lady came up behind me and touched my back. I was wearing one of those blasted shirts that had the buttons all the way down the back. We stopped in the middle of the crosswalk and she buttoned the 3 buttons that had come undone! She said she just couldn't let me walk around with my camisole showing! I was appreciative!