I'm sorry to hear that, but good for you for going through this process. As someone actually with a mentor in the management field, i know firsthand that the app process is idiosyncratic. Faculty might just not like your research interests, fewer spots this year, etc.
That being said, I think you're unfortunately at a higher disadvantage because you've been out of school for awhile (so you're likely older than the average applicant and less likely to have recent academic rec letters) and you also don't have a mentor so you don't know what's going on in the field and what faculty are looking for in apps/statements. You also applied to really tough schools, so my advice is to do one/some of the following: get a research job in management/ob, improve your statement (e.g. by being more specific in your interests), and apply more broadly next cycle.