Neglecting the elderly is like neglecting children. When someone is no longer able to take care of themselves, neglecting that person is evil. Taking advantage of children and the elderly, or those who cannot understand, is worse than criminal.
If an elderly person says something is going on, listen to them. They may well be delusional or even hallucinating, but it's worth checking into, just to make sure they're all right.
There is judgment coming for those who neglect children and the elderly, and it will not be pleasant.