ICICI Bank — not getting experience letter for the time I worked with icici bank

Address:

134109

My name is surbhi khurana (Surbhi chawla prior to marriage). I worked in icici bank from july 17 2006 to june 10 2008 as an officer. My employee number was 146549. I am applying for a pr to canada.
For this purpose i need an experience letter with detailed responsibilities on the icici company letter head.

I have been following up with alumni and settlement teams of icici back for the last 2-3 months but not getting a response. I need the letter asap.

Need help in resolving this issue.