Teraced houses, we hear neighbours' 3 year old DS crying - and by crying I mean screaming out mummy/daddy/mummy i just want you to talk to me/i just want my milk, running around the room bashing into things. This happens pretty much every night and he has been left crying in the night for well over a year, happens about 2/3a.m. and wakes us up, several times a week at bedtime too. Very occasionally we hear neighbours go in and tell him to be quiet but that makes no difference.
We have a 9 month old who wakes up a few times in the night, not crying unless she has a blocked a nose, but DP usually sleeps in the spare room anyway - room next to neighbours' DS - in order to get sleep as he goes to work /gets up early with our baby, but gets woken up by next door, as do I when I've slept in there because ill.
From passing conversations, neighbours know we can hear it, their attitude has been "oh that's just DS" or say how DS has been difficult this past few months. They have another baby a couple of months old now too.
The thing is, not only is the extra lack of sleep making us increasingly annoyed, having our own baby has made us even more upset to hear this poor little boy crying like this so much and just being left. He cries several times during the day too, what I guess you would call terrible twos type stuff though I don't know about that.
I have offered to have him round here to play any time, since they had second child, to give them a break, so far not taken up on that. DP and I have talked it over a lot and can't think of anything we could say that would make them change their tactics, even though has been going on so long it obviously not worked. So is the best we can do just say "the noise is disturbing us please can you try to keep it down"? Any advice on this would be great.