If you have want to cancel a Listing, you can do this through Buy & Sell.

1. Go to Buy & Sell
2. Tap on ‘Listings’ to view all the currently open Offers.
3. Tap on the ‘Listing’ you want to cancel.
4. Tap on the ‘View Details” link.
5. Tap on the ‘Cancel Listing’ button.
6. Tap ‘Yes, Cancel’ to confirm the cancellation.
7. Once your Listing has been cancelled, all open Offers related to the Listing will automatically be cancelled.