My 80 year old mother has dementia, my younger brother is her carer but he has no power of attorney. He has denied my elder sister access over a disagreement about my mother and has denied all of his sisters access at one time or another. He also goes out and gets drunk and leaves her with his so called friends. We so much want to get intouch with social services but we are very apprehensive and frightened about consequences. Any advice would be so helpful.