State Bank Of India [SBI] — otp sent to old mobile number even after new number has been updated

Address: Hyderabad, Andhra Pradesh

Website: Sbi

My mobile number which was registered with bank is not in use anymore
As i am out of country and i don't use that number anymore.
So i requested branch people to change it other number.

They asked me to fill a form, send a email etc i did everything but in vain

When i try to do some transactions otp still sent to old number
And i am unable to do any online transactions
I reported this to the concerned branch but of no use.

I am really facing lot of difficulties, as i am unable to do any online transactions.

State bank of india
Gaddinaram branch
Dilshuknagar
Telangana
India

The above are the branch details with which i am facing difficulty.

None of the bank officials in that branch knows the exact procedure and how it can be resolved

Kindly employ people who have knowledge about banking transactions or either train them properly

But please don't create so much trouble to the customers.

Kindly resolve this issue asap.