Info for PC vs Mac: https://forums.adobe.com/thread/1658959?sr=inbox&ru=3738552
Phone support | Orders, returns exchanges
http://helpx.adobe.com/x-productkb/global/phone-support-orders.html
For the link below click the Still Need Help? option in the blue area at the bottom and choose the chat option...
Get chat help with orders, refunds, and exchanges (non-CC)
http://helpx.adobe.com/x-productkb/global/service-b.html ( http://adobe.ly/1d3k3a5 )