According to latest news buying of cryptocurrency in India is some of difficult but not impossible. Some of crypto-exchangers in India started peer to peer payment of their fiat currency to buy crypto.
On 5th July 2018 firstly stared p to p payment in Zecoex.com,
koinex.in want to start loop payment system,
coindelta.com wants to start Flux payment system and
Wazirx.com want to start escrow method of payment.
No worry about support withdrawn of banks of India. Some of exchangers continues their banking felicity till end of july 2018 because of on 20 July 2018 supreme court of India will deal with case if central bank withdrawn support to crypto activities.