WhatsApp EMI Reminder Automation

I need a WhatsApp reminder system set up for my customers using WhatsApp Business API. I've created an Excel sheet with the following customer details:

- Name
- Phone Number
- Due Date
- EMI Start Date
- EMI End Date
- EMI Amount

Requirements:
- Send text reminders 2-3 days before due dates
- Use WhatsApp Business API
- Trigger reminders automatically based on due dates

Ideal Skills & Experience:
- Experience with WhatsApp Business API
- Proficiency in automation tools
- Familiarity with Excel data integration

Please ensure that the reminders are reliable and set up in a user-friendly manner.