If you have animal control officers in your area then the animal control officers would be your best bet to call and complain about a neighbors barking dog.
The regular police won't be able to do much about a dark barking but the animal control officers will be able to do more and hopefully get the owners of the dog to control the dogs barking if it's getting out of hand.
Most towns have noise ordinances including dog barking so check with your town about the city ordinances that are in place to see if they can do something about the dog barking.