My pregnant ex partner has gone back to her ex who is an alcoholic and have beat her on a few occasions but nothing I can do but I don't want him around my child when it's born could someone please help me on what to do next and if I can prevent it maybe taking the child with me in my custody as she's not answering the phone or texts and he's been also saying untrue stuff about me to her and others serious lies like I'm a drug dealer a murderer and other lies