Hi,
I have had angry parents call on me before, and here's what happens. Early Learning (it depends what province you are in as to what they are called) comes to your door, and they say they've had a concern come in that they need to address then they come in check how many kids you have and leave...(Early learning can only check child ratio)
Now if he actually calls Child Services and alleges abuse.... Someone from Child Protective Services will go out and check if a concern is not noted they shred the document and you can go on with your day....
Hope that helps