It is his next door neighbor. We have witnessed multiple acts of suspicious behavior in the past years. The latest is changing his phone number and not notifying us or another relative of this change. She was very reluctant to give new number until my name was mentioned. We all live out of state. My uncle has mild dementia. I do not believe she did this to protect his privacy. Only to isolate him more. Would contacting Adult protective services be in order for this? Help!