UBER - missed my flight due to 4 drivers cancelling trip

Very poor service, I missed my flight, because 4 drivers accepted the trip then cancelled. The 5th driver arrives and I then only had 10 min to get to the airport at 06h00 the morning. Due to the late arrival, I then had to pay R840 extra to get on the next flight at 16h30 the afternoon.

I then laid a complaint on the Uber app for a refund on the R840 I had to pay and was informed that they cannot be held responsible for drivers cancelling trips. Afterwards I received a confirmation email from one of the drivers[Tumelo] that cancelled, asking me to rate the driver, but how can I rate a driver who cancelled the trip!!!!

THUS UBER DON'T CARE ABOUT THEIR CLIENTS.I WILL NEVER USE THEIR SERVICE AGAIN!!!!