Bharat Sanchar Nigam [BSNL] — I am surrender my new postpaid sim

Address:

39/3 Rajinder Nagar, 133001

Please tell me what is the procedure to surrender a new postpaid sim. I am going to nearest branch where i took the sim, they are advice me that after 3 months, you will surrendered it. Pl you confirm me... I wanted to know that what is your policy about the surrender of new postpaid sim. If i agree to surrender my sim what is the problem of your branch. After 3 months when i am going to surrender it, then i paid 3 months bill also why i carry the bill without using it. Please you give a reasonable solution as soon as possible.