Just stay on it with the admin shop and your chain of command. That's going to be a lot of paperwork to unscrew, they probably can't directly fix it at their level, and probably none of them have any direct experience fixing this particular issue, so it might take weeks or months.
Pay and admin people are often most afraid of doing something without proper authorization (i.e. where it spells out in some instruction what you're supposed to do) or of doing something the wrong way, more than they are of doing something late but doing in the right way.
But my point is you should be polite but also be persistent.