Double charged twice same day

I made use of uber twice today and and on both occassions I was double charged. I reported the issue on the app and received a quick response that they would rectify the matter but it definitely leaves a sour taste in the mouth. How many people check their payment notifications and why should we be ripped of like this in the first place. I'm deeply disappointed. 1st time might have been a glitch but I don't buy that the second time was a glitch. Uber you have just lost a client.