Uber’s lack of investigating a ****

A while back, I think last year June, I was ****med, someone used my card details to pay for their uber ride. My card was with me at the time and I did not use the uber. I reported this with my bank and after investigation they refunded me the amount (R500). Unfortunately this amount reflects as a debit on my uber account, they want me to pay and for every ride I request or food I order I am requested to “repay” this R500. I have raised this query with uber so many times and it does not appear that they are conducting any investigation besides of their insistent reminder to pay this amount every time I request. They want me to pay for a ride that I never took, after the bank concluded that I was a victim of a ****. This is really ******** of them to not atleast investigate instead keep on insisting that I pay. It’s also an inconvenience because now I am unable to use the app.