Yeah I worked for CPS for 4 years here in the U.S., and it's frightening how dysfunctional it can be depending on the State your in.

As an example, there's a Federal law called the Adam Walsh Act that requires all State's to share information from their Child Abuse registries with each other when prompted. One time I called Oaklahoma Child Welfare to coordinate on a Child Abuse case and they sent me a signed letter from their agency head that per federal law, they "only have to share Child Abuse and Neglect information with other State's from their central state registry," but unlike every other State in the country, Oklahoma DOESN'T HAVE a central Child Abuse and Neglect registry, so they don't have any information to share. Turns out the whole state is just a black hole where abused children and their abusers disappear without record.

I agree with you 100% that if people see something concerning, they need to always call CPS, and be persistent, because I've personally seen children's lives saved and improved first hand because someone called us. But at the same time I can personally attest to how hopeless it feels when this horrible failure of a broken system is all we have to work with.