It's right there in the article.
Since you apparently didn't read it:
Return Process
Here’s how the process works:
- Please submit your return request by completing this web form.
- We will send you a postage paid box so you can return your Pill XL speaker to us.
- After we receive it, your Apple Store credit or electronic payment will be available within approximately 3 weeks.
From the web format you fill out:
How would you like to be reimbursed?
Apple Store credit
Electronic payment
If you choose an Apple Store credit, it will be provided via email and may be used in the Apple Store or an Apple Retail Store.
If you choose electronic payment, it will be issued directly to your bank account.