There's one trick to get 1% cashback. If you have a Jupiter Pro account you can get the 1% cashback on UPI spends. I did this via Amazon. Even Amazon doesn't support PNB Credit cards just yet but the UPI transaction will go through, you'll get the cashback in your Jupiter account as Jewels and the money will get refunded back in the Jupiter account in some time. Even after getting the refund, the Jewels havent been deducted yet and its been more than 3 weeks that I did the transaction.
Do make sure this payment WILL NOT go through and you will have to make the credit card payment AGAIN!!