UBEREATS NEVER DELIVERED!!!!!

I ordered food yesterday which was never delivered. The driver (Evans) claimed to have made contact with me as he was waiting for long. I stay in a complex when drivers deliver they can either leave the food with our security or wait till the customer collects if it has a pin. I always make sure i go to the gate 5-10 minutes before the driver arrives, i never received a call from the driver only notification after i have been to the gate twice with no driver in sight and even confirmed with security on whether ubereats came and security confirmed even checking cameras. My questions is why didn't the driver leave the food with security if they couldn't reach me as alleged, why did the driver note the order as completed/delivered when it wasn't and why did the drivers number go directly to voicemail after this? Uber is refusing me a refund so i asked them to credit my wallet because the money was deducted from my card yet i didn't receive the food. i tried calling the driver on y side as well and it was going to voicemail. Ubereats is refusing to assist and claiming their driver tried calling me which is not true. I'am super upset and disappointed at their service because i'am a regular customer who has never had issues with them but now with this i will no longer order from them.