See below, leave a note, mail a letter, tell the neighbors you are going to be calling the authorities if they don’t fix the problem.
But let them know the problem can be fixed, some people are so ignorant of their own animals that they don’t know this shit.
TIPS ON CURING NUISANCE BARKING
When you are home and your dog is outside barking, firstly go out and reprimand, yell ‘BAD’. The reason you use the word we have suggested is so the dog will learn these words are directed at it, not at whatever it is barking at.
The reason for yelling this is that you will need to be louder than the noise the dog is making.
If you use 'BAD every time your dog does something wrong it will soon catch on.
Be sure to praise your dog as soon as it stops what it is doing wrong.
Monitor the barking and only reprimand your dog for those things that do not constitute a good watchdog, i.e. birds noises, the neighbours, passing pedestrians, and other dogs etc.
BARKING PREVENTION AT THE PUPPY STAGE
A young pup that barks at people or noises etc is a good indication that you have a budding nuisance barker developing. This is a sign of a nervous pup that worries about everything. A well adjusted pup will not usually start barking until somewhere between 8 to 12 months of age.
If you have a pup that is starting to bark at everything that moves, discipline it by growling ‘BAD’ at the precise moment it starts. Praise it as soon as it responds.
Clapping your hands or throwing an object onto the ground near the pup, such as a can of pebbles, (careful you don’t hit the pup) and at the same time growling your reprimand word (BAD) should help stop any premature barking.
A puppy that persists even after your reprimand could need some socialising.
Try a Puppy Pre-School or Bark Busters