Since 2015 I've been a full-time live in. Each time his sister calls which is not a lot, they never ask to speak with me concerning him. This gentleman is hard of hearing and not much is understood on his end. Should I call back, which I have several times, and continue to ask if they have any questions for me or am I just starting something? When I call them and ask, they seem dumbfounded. I really don't know what to think.
Just keep doing a good job with this gentleman, and let him know that at least you care about him, as it's obvious his sisters do not.
If they have questions about his health or anything “private” they need to ask him.
You should be keeping a log or journal as to day to day events. This can be shared if necessary with whoever is POA.
I do feel I have to comment on your profile.
He should be paying you. Living in a room in his house is NOT pay for the care you are giving.
It does not matter that you may inherit property. There is a very good chance that any Will will probably be contested.
I truly think you need to discuss this situation with an attorney