UPI Payment Automation with WhatsApp Integration

I need to automate the process of sending UPI payment links to my clients and recording the payments they make.

Key Requirements:
- Integrate UPI as a payment method for my business
- Develop a system that automatically sends the payment links to customers
- Record the customer details and the payment information each time a payment is made

The ideal freelancer for this project will have:
- Proficiency in UPI and payment gateway integrations
- Experience in automating payment processes
- Familiarity with WhatsApp API for sending messages
- Knowledge of data recording and management systems
- Previous experience in developing similar systems would be a plus

Please indicate your relevant experience when bidding. Thank you.