I think you hav got your broadband connection in the month of march..If it is so, read on.. or else ignore I made certain assumptions please spare me.The amount of data that can be downloaded(billed usage) in your first month of connection depends on which day of the month you got the connection..As you said, you got 152 free calls , means that you might have got your new broadband connection on 5th march.. so effective for 27 days in the month of march, you are entitled 152 free calls.similarly, for the month of march with 31 days, day usage limit is 1508MB.But you hav connection only for 27 days, corresondingly you re given only 1313MB of billed usage ( 8 am to 2 am)..The rent of Rs 42 is your telephone rental in your previous landline plan, before getting the Broadband connection on 4th or 5th.1520-1313= 207MB * 0.80 =Rs 165.60 . This might be your extra billing.. So total bill tured out to be 500+166+taxes=695..
