I built a voice IVR system in Twilio that fronts the network's internal matching API. Inbound calls route through Ringba. When all referral specialists are on the line, the call falls back to the IVR. The IVR collects the caller's postal code and a menu-driven choice of issue type. It then sends a GET request to the internal API for a matched company that can take the call. If a match exists, the IVR reads the company info to the caller and transfers the call through Twilio. From there a Make scenario takes over: it creates a lead record through the internal API, sends an SMS through Twilio to the caller with the matched company's info in case the call drops, sends both a Twilio SMS and a Gmail email to the company with the caller's info, and posts a Slack notification to the internal team with the full lead and company context. The whole system replaced an aging no-code platform that couldn't hold up at this volume.