yeah! it's 100 bucks extra for me..Need to get this sorted out or else they will add 100 Rs extra in every bill.well, it's not the people who are migrated to combo plans from any other plan are effected, i was on Combo plan only.I didn't give application for change of plan so it's obvious that there is something wrong with their system..yeah! there might be a lot of people who will be effected as a result of this...MTNL will surely look into this once the number of complaints grows regarding this issue.What i feel is that MTNL will fix this and would adjust the next bill accordingly by reducing the 100 Rs or 500 Rs they charged extra this time around.