Uber charged me when I didn't use their service

I was at the rugby at Ellis Park on Saturday, I've never used Uber before but I thought I'd give it a try.<br> First of all none of the drivers could figure out where I was, they wanted me to walk up to the main road to find them! The app clearly shows them where I am.<br> Any way after about 40 min of waiting my friend and I got fed up and got a lift with another taxi service.<br> My phone died on the way home and when I got home I saw the trip that I requested was active, I cancelled the trip as quickly as I could and thought nothing of it.<br> When I woke up, to my surprise, Uber had charged me R485.98!!!!! <br> I expect to be contacted and for this to be resolved today.<br> <br> This is *******!<br> <br>