You can buy and sell Crypto on Vertex.Market using IMPS as a payment method. Immediate Payment Service (IMPS) is an instant payment inter-bank electronic funds transfer system in India. IMPS offers an inter-bank electronic fund transfer service through mobile phones.

If you want to Buy Bitcoin using IMPS, go to Buy and Sell Bitcoin & Cryptos in India with INR (vertex.market) and look for a seller who is selling Bitcoin using IMPS as a payment method and then you can Buy Bitcoin from them.

https://vertex.market/india