Sharraxaadda

Every. Single. Weekend. Loud music, screeching, stomping and copious amounts of banging and rowdiness from the 2nd floor rear apartment. I have spoken to the landlord, I have reported to the local police, and even tried to be loud in retaliation, and honestly I don't know what else to do. This is a building inhabited by working professionals, with the exception of this one tenant who has refused to keep the noise down despite numerous complaints and warnings from the landlord. To be kept up after midnight every Friday and Saturday by a gaggle of drunk college kids with no awareness and respect for their surroundings is infuriating. Please help.