Returning and changing should be not used and not opened in 30 days.
If you want to send the stuffs that you want return , you should fill the back of your bill and send it to us in 30 days.
When we have the cargo if your stuff's returning condition is appropriate,we will send you an email to inform you. 
Refunding process lasts 2 days. You can check it on your bank account.
Address of return; 
Mehmet Nesih Özmen Mahallesi, Kayıkçı Sk. No:25, 34173 Güngören/Istanbul
For more information; info@johnfrank.com.tr