In laws not allowing to meet my children after grant of divorce decree

My wife age 26 left me without any reason in 2013 . At that time our daughter were 3 years old. so i use to visit there home to meet her but they denied as they are rich and powerful . As they didn't have any reason to filling a divorce so 2016 they put a condition before me that if i sign the paper they will allow me to meet my daughter. i had no choice so i agreed. we both made a mutual agreement on 50 Rs stamp about child care,custody and meeting. there is clearly mention that I and my relatives can meet twice a month. But after 6 month when decree is issued they again denying to meet me to daughter . in our divorce order there is nothing about child care , meetings and other things as we already settled this matter out of court...now what can i do..i m very much depressed and feeling cheated. i want to meet my daughter.