I took Uber from Charles De Gaulle airport to the city. I was already waiting for the taxi and didn't make the driver wait. In the car, quite oddly the driver didn't start the trip. I asked him twice and he said the Uber app doesn't work that well in France. On completion of the ride, I got down and assume the preagreed amount of about 50 Euro is the one that would be charged. The driver however started and closed the trip at that time, thereby charging another 50 Euro as waiting time. So paid 100 euro for a 50 Euro trip.When I reach out to uber customer support they refused to help saying it was a preagreed amount. Now they are not even responding. Uber in France is a scam. Drivers openly scam customers and uber doesn't help.