Harssment and domestic voilence

I( my elder sister)am a teacher and I live in a joint family with my husband and my in laws since three years. Among the occupants are my also three sister in laws, two of them are unmarried while the older is divorced. I recently had a baby girl and was staying with my mother for a while during the pregnancy on the advice of my husband as I had really high blood pressure and the food at my in laws is cooked with humongous amouts of salt. But after the delivery I went back to my in laws with my baby girl, first they(including my husband) wouldn't admit me in the house giving me stupid reason as the house was possessed and and for a while not fit for women who had just given birth and therefore was "impure" therefore I stayed for forty more days at my grandparents house who lived next door and (also my mother won't take me back as she smelt a rat with my in-laws scheme). After forty days when I went to my own house(in-Law) at first they wouldn't even look at the baby and after a while my mother, brother and sister in law started cussing and swearing at me they accused me bringing bad omen to the family and in my absence finding some powdery "black magic thingy dirt mud" in my room(which was usuallly accessible to everyone in my absence) accusing me of supernaturally causing the death of my father in law and and breaking off the engagement of a my sister in law. The brother in law started cussing shouting and threatening me while my sister in law hit me while was trying to call the police and snatched my phone away. I locked myself up in my room with my baby while my husband was held hostage in the other room. With the help of my cosin who alerted my mother who called the cops on them but the cops dismissed them with a warning but now the next day they have started micro harassing us like cutting off the electricity and power and water supply and locking up the common kitchen. What should I do please do tell?