Question regarding a fathers child visitation rights

My wife and I were planning to file for divorce by mutual consent and talks were going on. Issue was mainly due to differences and interference by her parents. We are Hindus, married for 14 years with 3.5 yrs Son. Now suddenly after a heated phone call between her mother and I, she has taken leave from work and shifted from our house in Bangalore to her hometown along with son and her parents without telling me. She called me after shifting to inform that she would be applying for divorce. Now they don't connect me to my son when I call and are not picking up phone. Are telling people that they would put my son in a school in their hometown. She hasn't quit her job in Bangalore. After divorce I wanted my son to spend with me alternate weekends and half of major holidays but she wasn’t agreeing to it. But now, before divorce, can they stop me from talking or taking my son out or bringing him to my home for few days? Can they put him in a school without my consent? Please advice.