50% of order missing. Refund 29%. Amazing calculation

Ordered 2 x large pizzas and only received 1. Called the store and the manager confirms 2 large left the store. Which means the driver stole 1. I immediately complained and received a refund of R46.77. I paid R155 for 2 large. 50% OF THE ORDER MISSING BUT REFUND IS 29%. Uber eats says they cannot adjust the refund. I then posted this on facebook and received a response telling me to use the in app help. I then complained again. Uber eats now says its beyond the 48hr window and they cannot assist me. BUT i complained immediately.