ZEBPAY have delinked HDFC bank accounts now. So you cannot buy or sale with HDFC. I am not sure if they are planning to do with ICICI bank the same. Also if i look at the other exchanges in India, BTC volume is much less compare to global market. So Ban can come anytime.

On another hand,GOVN and big celebrities have invested heavily. So i personally dont think Crypto will be banned in India. Crypto is the future.