I need a small utility that pulls customer sales and payment-receipt data out of Tally, drops it neatly into Excel, reconciles each invoice against what has been paid, and then reminds the customer when something is coming due. In the Excel file I must see: • Customer name and contact information • Exact sales and payment amounts already recorded in Tally • The original invoice date alongside the payment due date As soon as the sheet opens it should refresh from Tally (ODBC/XML is fine), calculate outstanding balances, flag anything overdue, and fire a WhatsApp reminder directly from Excel. A quick “Send All” button that loops through the due items is ideal, but individual sends must also be possible. I am happy with a lightweight VBA or Power Query approach; if you prefer another method let me know as long as the workflow stays inside the workbook and the message goes out through WhatsApp. Please deliver the working Excel file, connection instructions for Tally, and a brief note on how to adjust the reminder text so I can personalise future messages.