Unethical social worker concerns. Does anyone know what I can do?

I have a social worker who had demonstrated unethical behavior for over 1 year. Most recently she has colluded with my elderly mother, diagnosed with dementia to have me evicted from our family home. I care for my 88 year old Father with prostate cancer, whom I discovered was uncared for and walking around with undiagnosed cancer prior to my arrival 2 years ago. My mother would subject him to full blown rages where he would shiver in fear, leaving him traumatized by her screaming. Knowing she showed symptoms of dementia, it would take an arrest to have her evaluated and confirmed with the disease. The SW that took my complaint sympathized with her and has taken a personal interest in having me removed from our family home, even going as far as to recommend services that do not compare to the care I provide for my sick Father. With our family divided over my parents care, my Father chose both me and my sister as his agents and POA. Since the POA secures my residency and care for my Father, my Mother was unsuccessful at having me evicted. Exactly 3 days of learning that my Mother's suit was dropped, the SW paid me a visit, accused me of manipulating my parents and taking my Father's money, a charge my Mother falsified not one week after her arrest. I keep tight records and receipts and was never charged. This time the SW lied stating I told her that I was going to move out one year earlier, a conversation that was never had; then she moved on to the eviction, when I stated it was unsuccessful due to my POA and caregiver status, she questioned the validity of the POA and DEMANDED to see it. I went to show her, and called my sister to witness the call. The SW became agitated, told me "you can't record me", when I explained that it was legal and by remaining she agreed to be witnessed, she ended the visit and ran. She returned one week later because my brother secretly asked her to, and I came downstairs to record her, and she said.." you are not going to record me.." and ran again. She followed up with a phone call, I had my sister on the call to witness it and she quickly hung up AGAIN!!! She finally made contact with her supervisor, who never identified herself and demanded a copy of the POA, which has nothing to do with what she claimed she was investigating BUT a focus on getting me evicted by nullifying a POA drafted by Attorney's. Her behavior and intentions are clearly biased and unethical. I need to know the boundaries of her legal authority to demand my Father's legal documents AND as a licensed professional, what are the steps to go after her liscencing for abuse of power and interfering in the care of an elderly cancer patient? Any wisdom out there?