i do doubble to buy a same of photoshop cc it's my mistake. can you refund once for me?

Unfortunately, only Adobe customer service can assist you with your issue. These are user forums; you are not addressing Adobe here.

Click on the link below, and after that click on "Still need Help? Contact us."

Then on the next page, click Chat

There is also a phone option. 1 (800) 833-6687

http://helpx.adobe.com/contact.html?step=PHXS_downloading-installing-setting-up_licensing- activation