Honestly Columbia taking this much time to respond is a big red flag. It is not that complicated to evaluate applications and admit those who are most qualified. If the program actually has the best interest of their potential students in mind, they would not make them wait until May to know where they will go to graduate school. Not to mention the fact that we paid money to have our applications evaluated with the expectation we would have a decision by March. At this point, even if I was accepted I would decline solely based on the programs clear incompetence.