Wife not coming back to husband after son birth recently

My wife is not coming back to my home, we had a boy born 2 months back.. my wife's mother and father are abusing me with bad words and not letting my wife to come to me.. we had inter religious marriage iam hindu and she is Christian we married in two traditions Christian and hindu.. I didn't agreed church marriage but accepted in function hall..so that I need not to convert my religion. After that we got married in Hindus tradition. Now my wife and her parents are not letting my wife to come to my home.. they are implementing all prayers and applying oils and doing all the stuff of their religion..but not allowing me to even tie before marriage my wife accepted and promised that she will follow my belief and traditions too.. so I never opposed her for prayers and sundays churches infact I took along to churches respecting her beliefs.. but recently my wife and her mother abused me and my mother and not allowing me and my mother to see my son even.. I got to know that they are approaching their community church heads and complained to police verbally that iam harassing my wife.. iam not anti to their religion..but their discriminating me and my beliefs.. and also showing discrimination on my son too.. plz someone help me how to make a good move against their discrimination legally.. it's been 1 year and 6months married but she hardly been 4months in my home..calculating all days now and then she been with me.. plz plz some one help me before I take a wrong decision myself iam very disappointed because all laws are in favour of girls only even if they are wrong.. plz help me plz guide me