I contacted Uber support because I could not book a trip. Whenever I tried my app just said "We've detected a problem. There was an error processing your request. Please visit in-app help for assistance." In app help says nothing useful but directs you to submit an online request that will be responded to after a few hours. I submitted it at 8:30pm and a little after midnight I got a reply asking for a screen shot of the error message - note that my online request INCLUDED THE EXACT WORDING OF THE ERROR MESSAGE ALREADY. I sent the screen shot to them. I then did my own diagnostics. I tried installing the uber app on another two devices. Both experienced the same error at exactly the same point. I removed my credit card and re-added it. No change. I added a completely different card. No change. I tried a new account, no change. In the end, I discovered that you can actually book a ride on the web, but the web has less functionality so you can't specify an exact time, you can only pick in 10 minute timeslots. Anyway, so I booked my trip, which was good because I was travelling at 7:30am. By 7:30am I still had not heard from uber support. The remainder of my review doesn't relate to uber support, but relates to dishonest practices by uber which were revealed while waiting for my uber to arrive. So my uber was due at 7:30. At 6.30 I was informed my driver had been assigned for my 7.30 pick up. Great. At about 7:20 I was informed my driver would be arriving about 7:45 (that's fine, I had given myself a 45 minute margin at the other end of my trip). Then around 7:45 I was given a brief glimpse of the location of the driver. It said he was now 29 minutes away. A little odd, it only takes 22 minutes from there to my house, maybe the traffic is heavy. 15 minutes later he is still 29 minutes away. By 8:13 he has just got 6 minutes further away. By 8.28 he was FOURTY FIVE MINUTES AWAY. Shortly after that I was given another brief glimpse of his location - he was now in the city. He was NEVER coming directly to me from the place that was 29 minutes away, he was going to the city with another passenger first and then coming for me. Uber's mapping algorithm is completely dishonest. Now at 9:03 I'll be picked up in 47 minutes time from now. Uber say that you can't cancel your trip within 60 minutes without paying a penalty because they need to compensate the driver who is on his way to you. But the driver HAS NOT BEEN ON HIS WAY TO ME in the whole 1.5 hours I've been waiting so far. I could have cancelled it and caught a train at 7:30 or even 8am and still arrived in time for my 9am appointment, but now the absolute earliest I will arrive is 10:30am. They were never going to need to compensate the driver for being on the way as he could have taken other passengers if I cancelled. But here I am having to sit around waiting for him because they won't let me cancel without penalty. VERY VERY UNIMPRESSED. If you have ANY OTHER OPTION, DON'T TAKE UBER!