Airpay Payment Services Pvt Ltd, a start-up that runs omni-channel payments platform Airpay, has raised series A funding of INR 24 crore led by venture capital firm Kalaari Capital, with participation from existing investors Rakesh Jhunjhunwala and Rajesh Jhunjhunwala. Airpay is a payments platform through which enterprises can make and receive payments across channels including desktop, mobile and offline.