State Bank Of India [SBI] — Transfer of sb account

I am serving with Indian Army and was posted at Asssam from 2010 to 2015. During my stay at Assam I had opened sb account (salary a/c) with state bank of India, Rangiya branch.
Now as I have been transfer to Mumbai since Sep 2015. I have mailed application for transfer of my account from Rangiya to Mumbai several times alongwith fax, but no responce received from Rangiya branch of SBI.

At this stage my bank details is required by my pay account office for completion of my pension documents.

I earnestly request you to solve my problem at the earliest.