Lapu Recharge System Build

I need a complete LAPU-based recharge system delivered as two tightly-integrated products: 1) A Windows desktop portal focused on recharge management. It must let me load SIM balances, trigger single or multiple top-ups, view live status, and track every transaction in real time... (Budget: ₹12500 - ₹37500 INR, Jobs: .NET, Android, Android App Development, API Development, C# Programming, Database Development, Mobile App Development, PHP)