Torture by wife

Hi,

I am married for the last 8 years and do not have kid. My wife does not like me talking to my Mother / sister and fights and abuses me, my mother and sister without any reason. My mother is 74 years old and cannot stay alone. My wife does not want my mother to stay with us and has blamed my mother on doing black magic so that we do not have kids. She abuses me of impotancy and has humiliated me in front of all her friends and relatives. Her father threatens that he would go to MP and MLA if i do not heed to my wife.

Please advice me of my options as thigs are gettting difficult day by day.

Regards,

Chandran