DEFI Care Call is built for the people technology keeps leaving behind: seniors who own no smartphone, manage five or more daily medications, and live alone. When a grandmother misses her evening heart pill, DEFI notices, calls her phone, and talks with her — "Have you taken it? Shall I call back in ten minutes?" If the dose is still missed, her daughter gets the next call, with a same-day report. A 14-slot smart pillbox confirms each retrieval with dual IR and Hall-effect sensors, and a conversational AI escalates every missed dose until it is resolved or a family member knows. Because the final safety layer is an ordinary phone call, included in the base price, no smartphone, app, or learning is required. Across DEFI's existing user base, sensor-logged on-time adherence averages 95 percent.