I had ordered a meal with Uber Eats first time and used their discount code on the 07/12 but days later noticed that I was charged the full amount and secondly I noticed another amount of R43 and received an email notifying me that they charged a cancelat

I had ordered a meal with Uber Eats first time and used their discount code on the 07/12 but days later noticed that I was charged the full amount and secondly I noticed another amount of R43 and received an email notifying me that they charged a cancelation fee from May 2022. Am I suffering because I opted for card payments, they have my details now they can deduct as they wish?