Speaking of trouble, I had the worst experience getting a card from HDFC. They were the ones who called me for it even when I was not interested, and they were adamant I give a 'permanent' address when I really had none. They would neither let go of the application nor reject it. They ended up making almost 15 checks on CIBIL for the card, ****ed up my credit rating, and in the end, did not give me the card. This, when I already had 3 Platinum or above cards.