Harassment by my wife

Dear sir/madam, I am from Karnataka. In April 2015 I got married a lady from Kerala. It was not arranged marriage as it was the second marriage for both. Later my family accepted her, father expired, My family helped me for rental home and gifted everything. Initially 2 or 3 months everything was normal. After that she started behaving rudely. I didn't have any regular income when I got married her. With the financial help of my mother & siblings & few of my friends, I was managing my family. My mother got expired. She forced me to shift from Karnataka to Kerala as she was pregnant. There she started harassing me and fighting with me of having extra marital affairs. I decided not to use any mobile for my personal use. Only 1 mobile for both. Wherever whenever I go outside, I used to take her because of her unbearable torture. To discharge from hospital after delivery I had to take help from an organization. After few days again she started fighting by saying I am in contact with nurses of that hospital. After few months I got some money from which I purchased a land in her name to build our own house in future. After a year she gave birth to another baby boy. Now she is pregnant 3rd time. Even few times she fighted with me on the road. She says I have married another girl without her notice. But 24×7 I will be with her only. Most of the time I only prepare food and feed my kids. Because I have no business, no job , no earnings. Always take loan from my friends. After my mother's death my siblings stopped helping us. Bcus she blamed them of doing black magic. Even she blamed me the same. To ger marry with my girlfriend by killing her we have done black magic it seems. During her second delivery her both hands became quite blackish(behind palms where they put saline or DNS), after discharge she started blaming me that I tried to kill her by injecting some poisonous drug to her hands, that's y her hand (only that part) become blackish. And I have paid nurses to inject. She never allowed me to work outside, so many times she said "give me 35 or 40 lakhs compensation and go whereve r u want but won't give kids". But I can't live without my kids. Bcus of torture like hell I left home without her knowledge to do some job. She gave missing complaint that I took a lady and ran away. I spoke to police and told that I have come for job in Karnataka She put voice msgs to my sister saying she will come to our home with kids and kill kids and she will also take poison. Threatening that she lodge complaint on my whole family. Police asked me to come and attend before the court and go back. Even she appeard in the local news channel and said my husband ran away with a lady by leaving me and 2 kids. I want to get rid of this. I don't want to leave my kids with her. She divorced her 1st husband of saying extra martial affair, she got a daughter of 15 years old. put maintenance case and still its going on. I am mentally got frustrated to the core.