large AI Customer Support Phone Chatbot

I need an end-to-end AI phone assistance system with many features that can take over our customer support and sales line, greet callers naturally, recognise what they are saying, route them to the right... (Budget: $250 - $750 USD, Jobs: AI Automation, AI Chatbot Development, AI Development, AI Integration, AI Voice Agents, Android, Audio Services, Mobile App Development, Natural Language Processing, Voice Talent)