Have you ever been in a position when you have made an order and already got a driver but suddenly you have an urgent need that forced you to cancel your order? It’s okay! you can cancel the order and reorder again when you're ready.

• In the order page, drag the grey lines above the driver’s details from bottom to top

• Click 'Cancel Order'

• Choose one of your cancellation reasons based on what really happened to you
• Then choose 'Yes' to cancel your order

I have already canceled the order, but it still appears on the 'Ongoing Orders' page 

Although it rarely happens, please force close the application, and try to re-open.