I would guess that if you have had 11 interviews from these schools, and 0 turn into A's, that either A.) you got hit with the bad luck bug (and I feel for you..) or B.) You didn't interview as well as you thought.
Your statistics are obviously strong and you have adequate experiences to get in the door. The admissions door is opened by your application, but your personal interactions will make or break those A's.
Remember some of those schools (Harvard, for example) make late final decisions on accept vs waitlist post-interview. Your late submission may also delay getting interview invitations, but aren't going to make or break your chances at most schools, even highly selective ones.
Wait. Wait. Wait.
And for God's sake, be patient and wait some more.