Most likely the landlord doesn't know, unless those people are the property owners, in which case I would have a chat with them about the law, and my intent to sue if they did not follow the law. Also, you should film them every time they do this so you can show the landlord and maybe a judge.

Agree with Ayup that you should definitely contact the landlord to let them know, and if you can get a recording so they can hear how loud it is that would be even better. Good luck!

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