Uber *******ly deducts money from peoples credit cards !!

on the 15/06/2048 I har an amount of R299 deducted from credit card by uber ogwhich my credit card is not registered on my Uber profile and i alst used the Uber app on the 10/06/2018 of which i has then cancelled the trip. I find Uber conducting ******* transactions using our credit cards whoch is against the i would like my money to be fully refunded and legal action to be taken against Uber.