We got in a verbal argument with a care worker who wouldn't do anything when she came to take care of him, wouldn't feed him, clean him, talk or even look at him. Except for the few times where she screamed at him she just waited for her time to leave. After the argument she sent a complaint letter to the local government claiming he was improperly taken care of (even though we cared for him every day in addition to paying people like her to help).
Here is where it gets good: He was put under care of the state until the matter was resolved, with a state appointed curator who received a percentage of his pension as payment and had full control of all decisions related to his care as well as his bank account. That meant we could no longer make accommodations in his house without their approval, every decision we took for him had to go through them. We had to pay for the large costs of care ourselves because it's not remotely realistic to go through the government to expense food, hygiene supplies and everything needed to take care of an elderly man near death. In addition to that we couldn't get rid of the agency that provided the abusive care workers, they made sure to make buddy-buddy with the curator and to paint us as abusers.
We went to his home every day to care for him and we would see the care workers just sitting there doing nothing, perfectly aware we were powerless to change anything or even throw them out. Eventually, after months of legal costs and being treated like abusers, we got in front of a judge and we were put back in charge after my dad begged for it. He was very close to the end then and I will always be bitter at how the state and these people conspired to take him away from us and prevent us from getting him better care during his final months.