NU bandwidth limit question

Hi,I have a question regarding the bandwidth limit in the MTNL DSL NU scheme.I began using the MTNL line on 16th Nov, and the MTNL usage stats page showed that I had a limit of 1000 MB for the month as of 16th Nov.Today is the last day of the month, and I still have 300 MB remaining to be used.So, if I don't use this remaining bandwidth today, it would all be wasted, and from tomorrow I will be reallocated a fresh 1000 MB of bandwidth for the month of Dec, right ? This would mean the bandwidth is allocated by calender months.Or can I use the remaining 300 MB till the 16th of Dec, that is, 1 month from the date of starting out.Any feedback on this would be appreciated.Thanks,Mario

One more thing...The MTNL page only allows viewing the session history from the 1st to the 29th of the month. So, is today's (30th Nov) download not considered for this month's billing ??