My wife took my child to Kolkata and is not letting me meet him what legal remedy do I have

You can file a petition for custody of the child before the Family Court in Kolkata under the Guardians and Wards Act, 1890, seeking custody or visitation rights. The court will consider the welfare of the child as the paramount consideration under West Bengal Premises Tenancy Act 1997 and the Hindu Minority and Guardianship Act. You can also file a habeas corpus petition before the Calcutta High Court under Article 226 if the child is being unlawfully confined. Under West Bengal Premises Tenancy Act 1997, the court in West Bengal can grant interim visitation rights pending the final disposal of the custody petition. You should provide evidence of your involvement in the child's upbringing and welfare.