Menatal cruelty by wife and her family

I got married in 2015 dec and eversince then my wife is creating a fuss about almost everything with my family, especially my mother. she is exaggerating every little stuff like m told to use less water in rice and likewise when all my mother does is teach her the ways of the new home she got married into. 3 months post the wedding she insisted on having a child to which i agreed and then in nov 2016 we got blessed with a baby boy. just after the delivery my wife's mother creeped in saying my daughter gave you family ka chirag! she should be importnat to you and all those gender biased mentalities which we never followed! my wife always as usual kept on sharing every detail of my family with her mayeka and they kept poisoning her mind. one day her mother came unannounced and took my wife away abusing everyone in my family and thereafter abused me for not giving money to them to take care of her and my baby when i had money secretly given to her! then we were accused of giving expensive care to the baby as per them and since they couldnt afford all of that they cursed us for flaunting out status (while we are only middle class)! all these baseless issues and alligations by them has my life miserable! her father keeps threatening me to destroy my life and career and her mother always harass me mentally she even assasinate my mother and father's character! many a times it has happend that they have taken their daughter and my child coming unaanounced and fighting everytime. please adivice what to do in this case! just in two years my married life is all hell because of my wife and her parents who seems to be poisoning my relationship at evey step as my wife listens only to them!