You can expect the credit / refund back, for your returned Wacom eStore order, within 10 business days of the date Wacom receives the return.
That said, depending on the payment method you've used, once the credit / refund is sent back to you, seeing this reflected on your end can vary according to the processing speeds of your payment method.
If you haven't returned your order yet but you are looking on how to do it, please see the next article:
How do I return my order that was placed on the Wacom-Store?
If you are encountering any problems or difficulties with your return, please be sure to contact Wacom Customer Support for further assistance.
For more information about our Return Policy, please visit estore.wacom.com (be sure to select your region) and find "Return Policy" or "Returns" at the bottom of the page.