Forum:FOR GOD SAKES MAN HELP ME!

I am currently in the Police headquarters the first time in the mission, but its my 12th time through, you would think by now i would be able to talk my way into it bu noooooooo i had to piss the seargent off, and now im creeping around the police station, i finally made it to the first floor from the third, and am currently being pursued by hostile enemies and am hiding in the mens restroom vent peice, emphasis on PIECE!!!!!!! I need help.