Go over and ask them nicely to be considerate.
If this doesn't work, complain to the complex management and get all the other tenants who are also unhappy to sign a petition, saying you will all move if these people are allowed to stay.
There are these really hot girls living in my building, but I also think, they're selling a**, so I don't wanna approach, cos I don't wanna hook up with someone who suck penis for a lining, inless that someone is Lily Thai or Jamine Byrne.
There's a different Benz or Beemer every night, with an old white guy in it, to pick them up, or come visit.