Step 1: Log in to your account and select 'Orders' and then, 'Spot Pending Orders' from the dashboard.
Step 2: Choose the Order that you would like to cancel. Click the 'Cancel' button next to it.
Alternatively, you can also cancel your Pending Order from the Market page. Simply scroll down and hit 'Cancel'.
Step 3: A green pop up notification will appear upon successful cancellation. You will also receive an email.