Byju's — My what is not able to attend the class properly.

From the past 4 month my what is not able to attend the class properly I have complain this many time but no one looks at my concern what they need the need the money and they have taken the money and they are giving no response then tablet is hanging so much the mental say that you will get a complementary tab in the compensation of this 4 to 5 months but we got no reply from their side I have screenshot is call recording and everything from the byju's side.