Hi, hope you can help? I am writing on behalf of my mother who has dementia and am quite concerned that the free holder and her brother (who acts as her representative) of the flat my mother owns a 100 year lease of - which is the flat at the top of the building and the Lease holder's brother lives in the flat below and runs an estate agency on the ground floor, underneath that. This person has been making demands for payments and repairs to the building, charging extortionate insuranc