I once got stuck in a bathroom in the basement of the place I worked at..The Steel door had been damaged by a forklift and wouldn't re-open no mater what I tried..It was 5:55 PM on a Friday evening..No cell phone on me..and my wife was already stressing due to a difficult pregnancy...
Just got through unscrewing the door knob with a dime to no avail..It was noisy with all the machinery running so no one would ever hear me and hardly anyone ever went down there.
I tapped the wall, looking for studs, then put my forarm through the wall and busted out a 2' hole..Figured that would be easier to fix.