HDFC & Indigo airlines have launched 2 6E Rewards Ka-Ching credit cards. Ka-Ching??? what’s that? Well, HDFC Bank says it is the sound of cash. Okay, we will take their word for it. 😀  The Ka-Ching credit cards come in 2 variants, 6E Rewards, the base variant (annual fee INR700) and 6E Rewards XL the […]