I've had drivers call ahead to ask where I'm going. I just hang up on them, cancel the ride, then order another ride. While I'm in the car with a new driver, I report the incident using the in-app system and, on many occasions, they even grant me a credit!
Similarly, I've had on at least two occasions where the drivers did obviously stupid, unsafe things within the first 30 seconds of a ride. I ask them to pull over, and I just quietly get out of the car, report the incident, walk away, and order another driver.