Automatic Rent Challan Generator

I need a small Windows desktop utility that will live on my Windows 7 (32-bit) machine and take over the repetitive job of producing rent challans from the solution.wb.gov.in portal. How I picture the workflow • I paste or import one or more GRN numbers... (Budget: ₹1500 - ₹12500 INR, Jobs: Automation, C# Programming, Desktop Application, Java, Python, Selenium, Software Development, Windows Desktop)