CellOne Services - BSNL — could not block my number [protected]

Respected sir,

I am V. Sree Jyothi, Research Scholar, University of Hyderabad lost my mobile nokia 1661 on 29/12/2009 around 11.00 o clock morning in the University of Hyderabad Campus. i had a prepaid cellone connection with number : [protected]. this connection actually taken by my brother in 2005 (as i remember) gave it to me with in 2 months - as he left Banglore. my brother and myself do not want to loose this connection, so i continued with this number, and thus continuously recharging. when i lost my mobile i came to know that the SIM card i not matching with name and adress as at the time of proof provided. i was completely shocked that all these day my number has been recorded wrongly on someone else name. now i strongly want to block my number as i need that number .
within these day i tried to reach all possible contact but failed to do so. i went to police station but i could not give complaint as the connection is not properly recorded. the cellone staff are reckless in their services to record properly the names of connection holders.i have sufficient proofs in proving my self that i accessed that number from past few (5) years.