Have you paid the bills till October 2010?
Assuming Lucknow is listed in Loading Portal...
could be edc also.
1.
Which ID you used ? did you get PW in your email ?
Usage records Billed are available to BB user only for six months.
2.
Try BSNL Portal with a 14digit usage portalID PW as password (to be obtained from your Exchange.)
If Exchange says register at selfcare site try again and post the error message.
After trying above
3.
Make an ONline complaint , that you cannot access your usage records since Aug 2010 and being billed excessively.
4.
Your telephone and Broadband will/may/can be disconnected by 15th January 2011, Or No outgoing calls for sometime.