NDIS advice needed

Need some advice on what to do.

Our neighbours brother just recently passed away over the weekend, him and his brother both have Huntingtons Disease. This brother, we'll call him George, is all over the place. He keeps coming up our drive way and knocking on our door, he's so paranoid about going back into the house and was in the street earlier. We had to call an ambulance. Ambulance won't take him to hospital or help as theirs nothing 'wrong' with him (no hate on the paramedics, they were amazing help).

George gets next to no support. He has said that 'if he goes back in the house they will kill him again'. He says they neglect him and would his brother as well.

This gentleman is really mentally unwell but he has no advocate and no family. The support agency has now taken away support with him because his brother has passed.

Is there anything I can do to help? He's really starting to disrupt our once peaceful street and I just want him to get the help and support he needs.