Comprehensive full AI Agentic trained Agent Team Setup

I need my entire business—sales, marketing, customer support, operations, call-centre activities, even basic accounting—to be driven by a coordinated suite of AI agents. The goal is not a handful of isolated... (Budget: $250 - $750 SGD, Jobs: Accounting, AI Agents, AI App Development, AI Automation, AI Integration, AI Model Development, PHP, Sales, Telemarketing)