I mailed them 3 times but using different mail ID than the one on my record and attached my flight tickets as well, i got reply finally as below..
Under the Privacy Act, this office is not authorized to make any changes to a file or communicate any details concerning a file to persons or representatives without authorized and expressed consent of the client concerned. We do not currently have an authorization on file to make changes or provide any information regarding this file to this email address:
I have changed the email ID on my Online account to the latest one but looks they dont have it updated.