I had a similar situation once.I complained to management every time I was bothered by the trash compactor, called emergency maintenance out (the machine was borderline broken), the whole shebang. Nothing changed until I made a Facebook and Google review citing the problem, the "solution" they tried to implement, and that they were refusing to take action on this noise ordinance violation. Immediate change of tune!

Honestly it's easy to get mixed up which end goes up top. Either that or they did it on purpose and "oh no I oops-ed" if anyone asks them.