I have used Uber frequently since they launched in Buenos Aires and have seen the service degrade in quality significantly in the past 6-12 months. I have my account connected to an international credit card and recently it's rare that the driver doesn't call or text after accepting the trip to ask where I'm going and how I'm paying, the opposite of the whole idea of the app. They make you feel like an inconvenience if you aren't going in the direction they want to go and directly cancel if you want to pay with card. I've gotten various explanations about the card vs cash payments from drivers but my understanding is that since 90% of the customers here pay cash Uber has no way to charge their commission on those trips leaving the drivers with a large debt of commission and the trips payed with card go towards paying off that debt so the drivers "don't get paid" for them. Uber customer service isn't much help as it is very automated and I often get responses that have nothing to do with my complaint or question. I really hope it improves since I hate the taxis here, but maybe until Uber is legal it's not going to get better.