It doesn't work in HDFC as far as I know. I works in Axis that's true.If you apply for another card through c2c you can get LE. It works in axis. Should work in hdfc also.
Like if you have 50k cl in axis. Apply another cc like select/atlas c2c against icici sapphiro 5L. Axis gives higher cl for new cc. Then you can ask them to match same cl for all cards.
You don't need ITR unless there is a requirement to increase the credit limit in order to upgrade. If you have 1L+ CL, you will get Millennia, 3L+ Regalia etc. This is tried and tested.Yes I did, to Grievance.Redressal. it was intercepted by some rookie customer care person, and I was directed to write to Chennai with ITR etc. etc. I was also advised that all upgrades are payable! I didn't get back to them. The closure bluff I haven't tried.
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