Watch CNBC's full interview with India's Paytm on the company's $2.4 billion IPO

India's digital payments start-up Paytm is raising its initial public offering (IPO) from $2.2 billion to around $2.4 billion, setting it up to be the country's biggest IPO listing. The company's CEO Vijay Shekhar Sharma and Group CFO Madhur Deora talk about their future plans and path to profitability.