Child custidy

My ex husband had 1st marriage which got demolish with 4 month after marriage. Then he got married to me for him it was 2 nd marriage for me it was 1st marriage . Child custody was in my hand but forcibly took away my girl child. When he doesnt have money he come to my place when he does have money he go away taking my child away he has no carrier this is happening for 4 yrs. I concentrate on career I want my girl child back but he has brain wash my daughter saying dont say her mother she never talk with me. If ex is not there my daughter behave very goid play with me But when he comes her behaviour he is playing my daughter psychology. He some time take to another city like Delhi . Now he took to Raipur where his parent stay. And he told me that he is going to Indore for training but acting is is in Raipur. He is not staying at one place he is playing with my child pschycology.he is teaching my daughter to tell lie to me. How can I get my daughter ack I know my daughter is very good . He had an affair when he was not thete with me when that women came to know that he is using her for money she left. In short he is characterless so his brother mg sister in law is also facing the same situation that I am facing both brother are characterless. How can I get my daughter back in life.