BSNL Cellone — Sim Registration failed

Address:

Raebareli, Uttar Pradesh, 229302

My sim, the number [protected], is showing as sim registration failed. I spoke to the customer care so he told me that this number allotted on 20 sept 15 to other person but I told him that my number [protected] is linked from Bank account SBI and HDFC. I tried calling up at the BSNL officer Raebareli no one answering the call. I would like to know what is the problem? & want my sim to be activated as early as possible.
I hope you and positive replay.

Thanking you,

Manoj Kumar