Called DOS to see if they could give me any update as to why the AP...computer says no show for interview

. after my husband spending from opening to closing at the embassy this is wacked. but it doesnt say anything about security checks. when I mentioned to the lady that at the interview they said AP she said "oh they wont put any notes, they wont say why the AP". so can anyone shed any light on this...the "NO SHOW" I find to be very confusing.