I have tried* calling the cops on them (but nothing happens)

Talk to them and if it doesn’t help RRC will assist.

RRC will *not* assist. RRC does not care at all about noise complaints and will only tell you to call the police non emergency number. The police will not show up (as you've noticed). Email your councilperson every time the noise happens and the police don't show up. That will make the police show up. If you are in the same building, you can also file a complaint with your landlord. There is no way to "file" any noise complaint on seeclickfix or with RRC.