Hank here from Shopify.
As your query relates to canceling your store, may I ask why you are looking at doing this and perhaps I may be able to assist? Is it an issue pertaining to sales or is it a case that you just do not wish to proceed with the store currently? I can certainly do my best to help with any roadblocks that may occur.
In relation to your query, currently, I would not be able to close your store because, we do not have the facilities to do this, but luckily this can all be done within your store admin by yourself. That video shows you how to do this but I will also list the steps for you below.
You can cancel your store in three easy steps once you've accessed your admin:
* Go to your Settings > Plan and Permissions section
* Scroll to the bottom of the page where you'll see the option Close Store
* From here you'll be prompted to re-enter your password and your store will subsequently be closed.
If wanting to remove apps prior to closing the store, this too can be done in your admin within the apps section.
Let me know if you have any additional questions!
All the best,