INCORRECTLY BILLED

I used Uber on the 8th August, billed correctly and thought I had gotten the best customer service ever. Until I woke up to an SMS yesterday and AGAIN today of amounts going off of my bank accounts to Uber. I don't know who has been taking these rides and why I am getting billed for it. I feel like the lady assisting me via email is not responding quick enough because who knows...I might wake up to another SMS from my bank tomorrow saying that funds have been deducted by Uber. I really was looking forward to being a return customer but after this...SOo disappointed