Got SMS of 1000 rs. Voucher as cashback for My HDFC Regalia card.
Offer - Simply use your HDFC Bank Credit Card for 6 or more times for min Rs.1000 and get voucher worth upto Rs.1000 from Amazon, Flipkart, Bigbasket, Swiggy, Zomato and more.
Standard Chartered credit card, offering 500 amazon voucher on spending rs. 5000 (for select users it seems)
Received the message and following link for this offer on sc mobile app.
https://www.sc.com/in/terms-and-conditions/actamazonapr/