IBA — change of registered mobile no.

Address:

Dehradun, Uttarakhand, 248008

Sir for the past at least nine months i have been filing application in my branch of sbi bank with futile result. Nobody talks properly. This is regarding my change of registered mobile no. I cannot get my otp or change my internet banking password which is mandatory to change after particular time. My mobile banking has stopped i could not get messages. Customer care says consult to branch and my branch now says we have done everything now consult to custoner care now what shall i do. Kindly help in this regard.
A/c[protected]
Sbi bank dehradun
Nathuawala 248008
Uttrakhand
Cont:[protected]
[protected]@gmail.com.