not sure we can choose an alternative care home because he hasn't got any finances at all .. didn't have own property etc
I suggest you get a professional to assess DF’s mental capacity - as a pp has said, he might have Korsakoff’s syndrome?
If he doesn’t have capacity, then he comes under DOLS. A best interest assessor from social services should visit him, every so often to get his views - including whether he likes the care home or not. He should then also have an RPR (representative) appointed - either a family member or friend. If nobody wants to do it, he should have a paid RPR such as an IMCA (iirc Independent Mental Capacity Advocate). If he tells them, he doesn’t like it in the care home and he is not being subjected to the least restrictive options (ie confinement to his bedroom and the floor), then they should see if he is eligible for legal aid in the Court of Protection for S21a action.
The Court of Protection exists to protect vulnerable people without capacity. DF would come under the Official Solicitor although a firm of solicitors and a barrister would be appointed to act for him, on legal aid, if he qualifies. The Court could direct DF’s local authority to produce a list of alternative providers that could meet DF’s needs; and to commission a psychiatrist’s assessment of DF (and any other professional assessment, it thinks necessary).
DF’s solicitor would have to go get DF’s wishes and feelings to present to the Court as evidence, including his views on any other care homes.
You and the care home would be asked if you want to be joined as parties to the action, so you could express your views. Neither of you have to. It is supposed to be a collaborative process.
The Court would look at the restrictive practices DF is being subjected to, and issue court orders to the care home about what they should be letting him do, including community access, in his best interests.
If the Court decided DF’s best interests lay in him moving to another care home, they’d issue a court order, saying so. The Court really is seeking to act in DF’s best interest - it’s not just going through the motions.
If DF has mental capacity, if I were you, I’d seek a review of DF’s care plan by the care home, the social worker, DF and you (if DF agrees).
IMO, care staff should be used to rudeness and aggression, if they look after people with dementia or other neurological conditions - there should be a behaviour support plan? If they claim they can’t cope with it, then Social Services should be looking for somewhere else, that can. DF should have a Social Services assessment for care and support and care plan; and any care home should be able to meet the assessed needs.