Customer Service

Does anyone know a way to contact Uber with an issue/problem with an account? I just got a new debit card and I've tried to input the card information into my Uber account about 20 times and I constantly get the message that the information is incorrect. It's the right information, which I double, triple, quadruple checked. I even went to my bank and the assistant manager tried but it still wouldn't work.

The bank register shows that Uber sent them the approval and the bank approved it, but Uber keeps denying it. Anyone have any suggestions?