My ex wife was physically very abusive towards me and verbally abusive to our children. We separated 5 years ago and I have had the children in my care since. The children only have visits with their mum 3 times a year but have regular phone contact. We have no formal custody arrangements in place. Over the past 5 years, she has continued to stalk, harass and abuse me. She has also tried to destroy my life and reputation with false accusations. The children are very frightened of her as she has lashed out at them many times. I have always tried to accommodate her wishes around access to the children, but she is extremely uncooperative and has become increasingly threatening and abusive. We have tried mediation but she continues to use phone contact as a platform to abuse me or the children. I have been so worried by her recent threats that the children and I are staying away from home at the moment. I have spoken to police, who took out an FVO on my behalf, but have otherwise been reluctant to charge her for breaches of the order. Our eldest child has started to become significantly distressed by her escalating abuse. He recently told me he was afraid for his life. I feel completely powerless and at a loss as to what I can do. I just want my children to live happily and to be safe. I am at breaking point. I feel as if I will have a mental breakdown very soon if the harassment does not stop. Is there anything I can do to stop her harassing us? Also, would I have good grounds for a formal custody agreement that required she have supervised visits, or could I even try for full custody of children?