Tata Sky — regarding mpeg2 box change to mpeg4 box

my name is Brahma Dev verma from district barabanki, uttar pradesh. my subscriber I'd is [protected].I received msg from tata sky for upgrading their channel. and said that you will not able to watch channel from 15 June.I have called them on 3rd June 2015, they replied that box will change in one week. after one week a I called them again this time they replied that your request is under process. today is 15 June and no one from tata sky called me for box changing. poor management and poor service.I m still waiting...!!!