Our mother lives in our parents house, our father in a care home near by. Our mother wants to isolate our father so he cannot receive calls from my sister and I and relatives who want to call him, whom she has years of bad history but they love our father. She has been diagnosed with control issues and paranoia. I put the phone service and phone in my name but she removed the phone anyway. My sister lives 200 miles away and I live 1500 miles away. The phone is the only way we can communicate with our father, other than quarterly trips to his busing home. Is this legal?