Redgiraffe doesn't let you pay the rent directly through a payment gateway like paying for products on Amazon or Flipkart.
Instead, it verified the rent agreement, etc and generates an invoice that you pay off from many of the supported bank's bill payment portals including their respective credit cards if any.
Payzapp from hdfc is one app that's supported that let's you add other Bank credit cards to your payzapp account and pay with it.
So the answer is, all mentioned bank's credit/debit cards and net banking and any credit card that's supported by Payzapp.