After reading all comments, my conclusion, it is more profitable for super money to sell FD backed than unsecured card...so they will try to sell as many FD backed card first as they can....They designed their algorithm in such a way that, out of 10 application, randomly they are issuing unsecured card to 1 person and to rest 9 they are offering FD backed card.
It is like a lottery....If you are lucky one out of 10, u will get unsecured credit card
After making maximum fools by selling FD backed credit card (Which is a marketing strategy)....They will open unsecured credit card for everyone....So keep patience and wait for 2/3 months....All the FOMO people will take FD backed CC immediately and they will regret in future when the unsecured card will be opened for everyone.