Auto-Notify Complaint Tracker -- 2

I want a mobile app that lets me enter a complaint once, choose any contacts already stored in the app, and have that message automatically reach every selected number in one tap—SMS, WhatsApp, or another reliable channel you recommend... (Budget: ₹600 - ₹1500 INR, Jobs: Android, App Design, App Development, Flutter, iPhone, Mobile App Development, PHP, React Native)