just FYI, for people who dont use Mobiwik or CRED (for whatever reason)
Seems like you can also pay CC bill using Amazon Pay. I dont know if it will fetc any reward or not, or if there will be any extra charge. just saw the option so I am mentioning here.
UPDATE
you can pay with amazon platform, if you use Net Banking there is no charge, I didnt had enough money in my wallet so dont know if we can use wallet or not, but I doubt that wallet money will be allowed.