If the refund process has not been completed, contact Apple Support immediately. Explain your situation to the representative and request to cancel the refund process.
At this point, you will need to act quickly. As such, you will have, at least two options:
- Check the current status of your refund: To do so, open the Apple Store app or go to the Apple Order Status page. Sign in with the Apple ID you used to purchase the power adapter. Locate the order in question, and check on its status.
- Contact Apple Support directly. To do so, simply select the "Support" link on the lower left-hand side of this forum's web page.