Would you complain to your office about your upstairs neighbors and their kids being loud?

Me and my husband have been dealing with this since we moved in. Our upstairs neighbors have toddlers between the ages of 2 and 4 and they are so loud at night. They are up all the way until 6AM screaming and jumping all through the night. We can't sleep at all. I know when you live in apartments you should expect noise but all night is ridiculous. I've already tried talking to the neighbors about it and they said because they get off work at 12am, they let their kids go to bed way later so they can spend time together as a family and we are just hearing their kids playing and being kids. Basically the kids days and nights are flipped around. I understand why they would want that but I shouldn't have to hear their children SCREAMING at the top of their lungs and running around from 12am to 6am. My husband kind of lost it last night because he has really bad chronic back pain and with not being able to sleep and also having to work with back pain he started crying. If this was during the day it would be understandable but I dont thinl we are being unreasonable for not wanting yo hear that through the night every night.