Indian Bank — complaint regarding improper response from your respective staffs

I'm Abishek currently maintaining savings account in uddanapalli branch, krishnagiri distic, Tamilnadu.Last week i have submitted a form to update my mobile number but still now it has not been done 2 days back i rang to the branch office to enquiry about the issue but there was not proper response from the respective bank staffs..so please let me know whats the issue and i want a proper response from your team.