If you are on BSNL and not using any Data Pack or exceed your data limit then get ready to pay more for it from 16th September. We have learned from our sources that BSNL will now charge 4p/10KB instead of 2p/10KB earlier. Along with BSNL Prepaid and Postpaid users, these charges will also be applicable to those who are using BSNL BlackBerry Plans.So, earlier it was call rates going up, and now Data charges. We just hope other telecom operators do not follow the same.