To cancel your shipping plan, you can do that by going to your account Settings. Click the arrow next to your Sonlet username on the upper right of any Sonlet screen. Select Settings.
Select the Billing and Payments page on the left side of the screen
Find the Add ons section and click Change Add-ons under Shipping Plan.
You can then deselect your Shipping Plan.
If you need a refund of your Sonlet bucks, please email us at email@example.com.