Uber Poor Service and Attitude

Contacted Uber to transport clients of mine today, Uber driver accepted a trip, after placing my clients in the car he looked at the destination 4.6km away and refused to drive my clients to the destination as there was traffic on one of the routes(of which there are 4 routes)... he refused to transport them and wasn’t polite at all. He then left the office block and parked outside. I then contacted Uber numerous times to which the refuse to call me or speak over the phone... Corps like these become a problem when their directors/supervisors ***ardly hide behind app communication/msgs and cannot handle a single call to give them constructive criticism. Uber service is becoming like central Africa which is sad as they started off well, clean, with decent attitudes, now their service smells as bad as the majority of their cars do as their drivers sleep in their cars most of the time...