To file a claim for your ERP charges , please follow these steps: 

Tap on the Earnings icon in your app > Order History > Choose the relevant trip > Need Help > Trip, Fares & Payments > Fares & Earnings Calculation > I did not receive ERP / Sentosa toll fee

To file a claim for other fees, please follow the following steps: 

Booster Seat Surcharges: 

Tap on the Earnings icon in your app > Order History > Choose the relevant trip > Need Help > Trip, Fares & Payments > Fares & Earnings Calculation >  I want to claim for booster seat surcharge

Parking Fees: 

Tap on the Earnings icon in your app > Order History > Choose the relevant trip > Need Help > Trip, Fares & Payments > Fares & Earnings Calculation >  I want to request for a parking fee