Bharat Sanchar Nigam [BSNL] — allotted sim number [protected] to other customer without any notification

Dear sir, my 76 yrs old mother, mrs bucchi devi staying at village dularpur, darbhanga. Bsnl sim no.[protected] alloted from pandoul with proof of her aadhar card no.[protected]. Without any notification mobile number has been stopped and realloted to someone my same number. After a long quirry alloted number individual deposited the above number to bsnl office madhubani. Now madhubani office says that you have to take new sin for same number from this office. Really it's a horrible matter whenever a number is active in mobile communication how it was realloted. Longed my complain with central grievance and head office bihar circle patna too to solve the matter. At the time of last call there was balance rupees 160/ above. Finally you are requested that please activate my same number to my old sim card already is in my mobile. Thanx