"No care or compassion shown towards elderly"

My nan was admitted to A&E through her dementia care home, which we had no concerns about until she was admitted to "care of the elderly" A7, my nan has a 24hr carer with her that she's been sectioned under the mental health act. Her dementia means she cannot communicate verbally. whilst visting on a number of occasions we found the registered nurses would not explain what the doctors had said during the day to my mother her next of kin and said she would have to communicate though the care home, which we found out they would send the carer out of the room whilst proving "care" My nan was assigned NBM and they would not even allow family members to give her mouth care even though they was not providing it often. The nurses do not show any compassion or care towards the elderly and on several occasions other elderly patient's asked for help and the nurses just walked past and complete blanked them, its only when my mom said it was disgusting that a domestic asked her if she was okay, also elderly patients was given food who needed assistance on 2 occasions my sister who works in a care home assisted with feeding patients as staff left them to go cold and walked off, There is no care shown towards the elderly and I feel patients and relatives are treated disgusting and if they do not want to show care they are in the wrong profession, From what I saw and heard on this ward it concerns me for patients who have no visitor's thank god my nan has a carer and fingers crossed no one I know will be admitted to this ward. The nurses I came across should be a shamed.