Kotak Mahindra Bank — want to update my contact number

Address:	122002
Website:	www.kotak.com

Hi,

I wanted to update my phone number for my existing kotak salary account. I called to customer care center after trying many failed attempts on net banking. Executive tried to make me understand the steps but i was getting some different error as per her. So she suggested me to visit the branch.
I went to branch for the same but their people were so unprofessional and not willing to take my request and making the excuse that printer was not working.
I don't understand why they don't have any alternate for such a particular problem. How could they deny to take the request if the user is coming from far place? But somehow an agent took the request and informed me that this will update within 24 hours but now its been 4days but still my number is not updated.