Report them to the landlord - every time they do it. If it's the middle of the night and you call him and he doesn't answer, bang on his door. Tell him they are stomping and your employer has threatened firing you if you continue to fall asleep on the job - you aren't getting sleep with these jerks above you who are intend on destroying your life, and you don't even know them. The landlord can't evict them after your first report. He needs a pattern to present to a judge, so keep reporting. After two weeks or a month, he should be able to evict them, if it is happening often enough.
Certified Paralegal, with 25+ years' experience & with Landlord & Tenant law experience.