Byju's — After Buying Byju's Package Mentor not calling and not giving service

Hi, my brother is a 5th std byjus BTLP Program student. I'm trying to my Mentor for my 5th std books order but byjus Mentor has not Contacted or connected with me. I tried calling for 15 days but the Mentor or support service was not showing interest to solve my query. And when I am trying to reach them they take a call and speak the service period is over we call later tomorrow. and they not calling. Byju is a fraud company
When I Bought the Package there the consular are talking sweetly and promised Byju to give Best 24/7 service. But they are Fraud