Alibaba-backed Paytm has said it will invest ₹10,000 crore over the next three years to ramp up its banking and financial services business. Paytm claims to have already pumped in over ₹3,200 crore in the last two years for its operations. "We hope to get the final approval for our payments bank operations soon," said Paytm CEO Vijay Shekhar Sharma.