Is your father ill? Is he mentally/ physically competent to manage a home?
How did he end up not being able to afford his cost of living?
This would concern me, because there will always be expenses and he has to figure out how to manage them individually.
Why doesn’t your father get a part-time job? There are plenty of jobs for retired people who need that extra income.
If your siblings are taking advantage of him...then I would call adult protective services and ask them to check on your father. APS can also refer him to senior assistance programs to help him manage things better.
Sometimes our parents age faster then we realize or need help more then we realize, and an objective third can help point it out and also refer the elderly for help so that it doesn’t all fall on the adult children.
What I find sad, is that neither your father or siblings are acknowledging what this is doing to you. None of them are feeling guilty for taking money from you, your husband and your children. Your father doesn’t even feel guilty for asking (again).
Your sacrifice to help out your family of origin should be acknowledged and valued. But you have to be the first one to do this. You do this by telling those family members NO.
At this point it sounds like your only value to your father and siblings is your money. Can’t imagine that makes you feel good about yourself. Is that what you want from them? Is this the relationship you want to model for your children?
You have hinted at some generational dysfunction in your family, hinting that you have somewhat risen above it. Stay on that path. They will try to pull you down with them, keep trailblazing!
The path to breaking dysfunction can be unfamiliar and uncomfortable at first, but don’t let that scare you.