"After care team refuse to listen"

My Aunt 95 has had wonderful care in Leighton after a fall at home, it is a pity the after care team refuse to listen to relatives about her future care arrangements. Leighton have confirmed my Aunt has Alzheimers Shortly after her admittance I was informed my Aunt would be looked after full-time by a named carer, I said this carer was not suitable as there had been an altercation between them in the past resolved when neighbours stepped in, my Aunt had received some bruising. This 'carer' has now moved into my Aunts bungalow and has told the aftercare team she plans to have it redecorated no doubt how she wants and have some alterations done. My Aunt loved her home as it was decorated, it wasn't modern but she was happy with it, the garage is full of furniture probably my Aunts. The after care team have NOT contacted any neighbours to check what happened. The 'carer' drives a mobility car and is said to be suffering from ME and is aged 75, hardly the person you would expect to be able to look after someone with very restricted mobility, arthritis, and Alzheimers again the after care team believe his is OK As soon as my Aunt is discharged she is not the responsibility of the after care team so that must be the reason my concerns are ignored.. My Aunt has been aggressive at visiting time when asked if someone had visited her and she had forgotten she would get angry and clench her fists when told she had been, she also does NOT know this carer has moved in she tells me she lives nearby, when told she was going to live with her she insisted she wasn't again anger and clench fists. I have gone round and round in circles trying to make someone take notice of a potentially violent event in the future without success including PALS everyone says try someone else . When / if this carer does take her home all she will recognize is the front door . No names mentioned she is still a patient After care teams will know who this is about.