I know it feels incredibly frustrating but one thing I learned from this cycle is that rejection is often redirection. Perhaps someone saw something in us that wouldn’t make us a good fit for the school. And that is not a negative reflection on us.
For my folks with other As, it is valid to feel bad about not hearing back from Columbia. It is also normal to feel bad about feeling bad about the lack of decision, because you want to be courteous to others without As. Like Beyoncé said (I am paraphrasing), take a day to feel sorry for yourself when you are feeling down, and in those 24 hours, allow yourself to truly feel all of your emotions and process them, so you can move on without it dwelling.