The only way I’ve found to contact a human when a ride goes awry is to say an accident happened. (In truth, it often involves a concern around safety.) That connects you with humans who can actually, sometimes, address or at least recognize your problem in a way the chatbot never can.
Uber’s refusal to fingerprint drivers betrays that they know they have criminals on their rolls. But I wonder how many cases of rudeness by the driver got upgraded to sexual assault (which, to be clear, is a matter of personal discretion) because Uber went all in on bots.