I wish I could help you out but I have the same problem with Cabo. Even if I have to step outside for a brief minute and I leave him out of his crate he freaks out and starts barking and crying and jumping at the door. When he does that Kina starts barking at him, kind of like she's telling him to be quiet. And then, of course, Coco joins in on the fun!
He's not in his crate very often. Just when I leave the house. Thankfully none of my neighbors have complained, but our houses aren't really close to each other and I never leave the windows open when I leave.
Hopefully somebody will have some ideas that may help.