revocation of a quit claim deed i was given durable power of attorney from my…

revocation of a quit claim deed
i was given durable power of attorney from my parents over a year ago, ihad a quit claim deed done on there home. since then i have been fighting 7 other family members. last week they talked my father who is in a nursing home, and my mother who still lives in the home to revoke my power of attorney, i have not yet been served with this revocation . can the quit claim deed be reversed and my name taken off? this was done solely for the purpose of having to pledge the home to the state medicaid program in order for them to pay for my fathers instutiional care.