but if your filing day closed to the end of June, not sure...they might mess up with July filer...
not sure about NSC...
for NC/background check, it depends on if the real Immigration officer to pick up the phone. it is also depends on the person who wants or not to answer your questions.
if you key in your AP case number, not 485 number, and the person who has access the database, then she might tell you the info...
keep calling until you find the person who can check your case.