missing items and no refund

on Monday I made an order with Nandos via Uber eats, to surprise one of the meals was missing a buddy coke. I called nandos to notify them but Nandos did not want to accept any responsibility for that I spoke to Jabu (manager) who told me that its not their fault that the driver did not check if he has the right order and that I must contact Uber. I did as advised and uber only rep**** to me yesterday afternoon telling me that they'll refund me R3.00 and that's the best they can do. I couldn't believe that especially because I use their services at least 4 times a week