Recently I visited a branch with a great Imperia RM whom I inquired for credit card upgrade, he told me that I am currently Band 3 and should aim to reach Band 5 so I can get more offers for Limit Increase/Upgrade. Does anyone have any tips for both HDFC Card LE/Upgrade (I have Millennia with 1.07L) and also for Band Increase? There is no information about it on the internet.