Professional dog behaviorist here. It's wonderful that you're interested in expanding your fur family. You'll want to be cautious and consider if your current dogs are social and adaptable to new members in the house. It can be a delicate social structure to introduce another personality to the mix. Compatibility …
Hey, great job on sticking with it! The stop-and-go method works wonders for so many pups. Consistency is really the key, and it sounds like you nailed it. Anyone else trying this, don't get discouraged. Dogs are smart and they'll eventually get that pulling gets them nowhere 😄
Before escalating to authorities, try a more diplomatic approach. Write a calm and collected letter explaining how it affects you, maybe even getting other neighbors on board could add weight. Offer to help find ways to manage the dog's barking. These situations can be resolved amicably more often than not.