Unauthorised deduction from my bank account

On 05 Aug 2023, I took the Gautrain from Hatfield to Centurion & later back to Hatfield again. As I used my bank card to pay for the transactions at the different gates, they deducted 2x R44 for the trip & 1x R22 for the parking, which is 100%.

BUT 5 days later, Gautrain has *******ly deducted 4x R240 from my account for no reason. This is utterly ridiculous!! I'm really disappointed!