You can use localbitcoins for better experience if you are not satisfied with these exchanges, because you will be able to transact your coins for different available rates and you may get prices even higher than Zebpay sometimes. At these exchanges, you will need to wait for your money to be funded and the waiting time is 24 hours (depending on when you withdraw), while at localbitcoins, users send the funds instantly through IMPS, or 3-4 hours if NEFT is being done.