Horrible service from Uber and Unrecognised/Unauthorised deductions on my account

So from the month of June, there has been unrecognised charges on my account from Uber. This is deducted from my account on the first of each month and the amount is R99.99. I informed Uber about this, and I was told they are aware and they can’t tell me anything further about account B. This morning even after deactivating my account with Uber, there was a deduction of R99.99. So far, Uber has debited R500 from my account and I don’t know what for and they are not willing to refund my money and stop these deductions. They just sent me some business template and said absolutely nothing really. Horrible service.