Petrol transactions requires a pre-authorisation of RM200 from your eWallet balance and any unused amount will be refunded within 15 minutes. Hence, you are required to ensure that you have a minimum balance of RM200 for any petrol transactions.
For exceptional cases (For example and not limited to: you picked up the nozzle and placed it back without fuelling), the refund will take up to 30 days to be processed.