No one should be talking to sister if she does not have POA. Dad has to verbally, at least, to give permission over the phone.
Social Security does not except POAs. You need to call them and give a reason why sister should not have payee. I would think you need to put in writing why you do not want to be payee anymore and why. My sister's pension is government and my nephew collects on it. The pension works just like SS. Mom was payee for nephew. When she, because of Dementia, could not be payee I had to write a letter explaining why Mom could no longer handle the responsibility and why I was applying for it.
Curious to why your son is involved in all of this and Dad. Why do they feel they are the best Caregivers of Grandma. Money?
I'm posting what you have in your profile as I think this extra info will be helpful in getting more accurate and specific recommendations:
"I was my grandmas full time caregiver and soc sec payee until my sister caused problems during her visit . I was taking a two week personal break while she was here . She used that time to move my gma into my sons hone without my knowledge and now she’s is interfering with her soc sec .. my father allows this as he is POA and gma has me listed as next in line."
So if you are "second" on as your GM's PoA, does your father have any cognitive problems? Is it possible your sister saw decline in your father and his ability to make decisions and manage your GM's affairs and thought she needed to act quickly to protect her? Even in this scenario, I don't know why she wouldn't loop you into this decision as the hands-on caregiver.
If your father has no cognitive impairment and he can still make good decisions for your Gm, there is nothing you can do unless you believe there is abuse happening and then you will need to either contact APS for a wellness check or contact an attorney (but you will need to have hard evidence of abuse). You can solicit for guardianship of her through the courts but if a family struggle happens before a judge, the judge may decide to assign a 3rd party guardian who is not a family member. Pursuing Guardianship can be extremely expensive (thousands of dollars).
You don't say if you've approached your sister to get an explanation and inform her that she isn't a legal representative. However, your father may be giving her permission to help him. If you haven't had this conversation, I would definitely start there.
Social Security does not except POAs. You need to call them and give a reason why sister should not have payee. I would think you need to put in writing why you do not want to be payee anymore and why. My sister's pension is government and my nephew collects on it. The pension works just like SS. Mom was payee for nephew. When she, because of Dementia, could not be payee I had to write a letter explaining why Mom could no longer handle the responsibility and why I was applying for it.
Curious to why your son is involved in all of this and Dad. Why do they feel they are the best Caregivers of Grandma. Money?
"I was my grandmas full time caregiver and soc sec payee until my sister caused problems during her visit . I was taking a two week personal break while she was here . She used that time to move my gma into my sons hone without my knowledge and now she’s is interfering with her soc sec .. my father allows this as he is POA and gma has me listed as next in line."
So if you are "second" on as your GM's PoA, does your father have any cognitive problems? Is it possible your sister saw decline in your father and his ability to make decisions and manage your GM's affairs and thought she needed to act quickly to protect her? Even in this scenario, I don't know why she wouldn't loop you into this decision as the hands-on caregiver.
If your father has no cognitive impairment and he can still make good decisions for your Gm, there is nothing you can do unless you believe there is abuse happening and then you will need to either contact APS for a wellness check or contact an attorney (but you will need to have hard evidence of abuse). You can solicit for guardianship of her through the courts but if a family struggle happens before a judge, the judge may decide to assign a 3rd party guardian who is not a family member. Pursuing Guardianship can be extremely expensive (thousands of dollars).
You don't say if you've approached your sister to get an explanation and inform her that she isn't a legal representative. However, your father may be giving her permission to help him. If you haven't had this conversation, I would definitely start there.