Ive gotten written up twice from my condo complex bc neighbors complained about my boys. I started taking a firm stance in barking, I wont let them. I firmly say "HEY!" when they start, and they immediately stop. Also I put a radio on when I go to work. It helps to drown out outside noises and helps curb the barking! Good Luck
I have no idea who complained about me, but I talked to the neighborhood busy body and told her how hard I was working with them to quit barking and made mention that I was written up. I figured whoever told on me would find out from her that I was working on it hard and give me a break and some time. Try the radio thing, it worked wonders for my boys!