I had a friend who had a false report made against her by her husbands ex-wife to Florida DCF after they refused to babysit the ex-wifes' profoundly disabled child (by her new husband) while the ex-wife went out partying.
A social worker showed up demanding to enter my friends home. My friend was a paralegal and was aware of her rights and told the social worker to come back with a warrant if she wanted to enter the home. No doubt extremely offended about the false report, I'm sure she was not polite about it.
The worker contacted the sheriffs office and they got a judge to sign off on an emergency order by saying the lives of the children were at risk. The social worker returned with multiple law enforcement officers who broke down the door of the home, entered with with guns drawn, terrorizing her children, cuffed and arrested her. No charges were filed.
The worker continually harassed my friend for most of a year with numerous additional incidents before the friend was able to obtain a court order barring Florida DCF from contacting her or her family, and restraining the worker from contact specifically. You could say that eventually she "won", but it's was a hollow victory in that it came at a cost she couldn't really afford and caused harm for which there could be no compensation.
There are rights you have on paper and then there are the actual consequences in reality if you try to stand up for them. When you're facing a petty dictator with almost complete power over your life and almost no accountability for their actions it can be pragmatic to play along and not risk inspiring a vendetta.