Uber unauthorised transactions ****

I keep getting unauthorized transactions from UBER. I do not know why this is happening. Last week they deducted R50 x 2 from my bank account which they refuse to assist or pay back my money. This morning again they ran these unauthorised transactions R50 x 2 from my bank account gone. Even now they tried again. Who gave you permission to dip into my bank account without my consent! Pay back my money now! Worst you don’t want to help us, your support team is useless! I want my money back!