State Bank Of India [SBI] — mobile number updation & account transfer issue

Address: Bhagalpur, Bihar, 812001

Website: www.sbi.co.in

Don't know which era does sbi want its customer's to live in!
I have my account from dehradun.
I need to update my old number as the phone number is no longer available to me.
But unable to success on it either from atm or any other branches.
Sbi can collect money and update uid from any branches but fails to update customer mobile number or account transfer even though i was live present with all valid documents.
Madam on counter told that i need to visit home branch only... Is it easy as breathe in air or an joke??
I have opened the account while i was studying there.
And i have no net banking facility in this bank.
Why ain't the bank asks to fill kyc and have the issue solved from any branch or gives right to change mobile number from atm if phone number is not in services.

This is completely reckless services.