Quote by blonde
Should i put a note thru their front door saying something along the lines of "you were heard and next time, Social Services will be called".
i happen to like this option....i think it covers several bases... including the possibility that what was heard was "reasonable chastisement".
I disagree ......... if it was abuse, a note like this, just says .......do it more quietly next time!
Call the police or SS

Sam xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I tend to agree with this. All it might do is alert the person abusing the child/children to be more careful.
If you have the house address I would go for the social services option and sooner rather than later as the children may still be bruised if hurt. If they have no evidence there is little that can be done otherwise.