If you remember from the interview day, 1/5 AADSAS applications goes to Columbia. You also probably had 8-12 fellow interviewees with you so give them a break. Be patient like the rest of us. I think it is unfair to lose respect for them because they didn't respond to your email very quickly on one of the busiest days of the year for their office. Besides, they said don't call them, wait 8 days for your letter and then inquire. So you should respect what they have to say first. I want to know just as badly as you do (I have no acceptances yet) but I understand they are only human.