Sorry for the long delay.
My card is active now and currently using it without any issue. HSBC is too much conservative regarding credit card customer acquisition.
If you hold any LTF Cards of ICICI >= Coral variant (non-Rupay) then you can try it via Twitter route. Mention the card variant which is LTF and tell you want CORAL RUPAY as LTF. Probability of getting approval is very high.