@Orbital_Speed
http://answers.ea.com/t5/Miscellaneous-Issues/Ref-Error-10048/td-p/2059069
Appears to be an issue between your credit card verification and the website servers, talk to your bank first and see if there is a way around it.
ideally this will be an issue that you will have a better chance addressing via contacting Bioware directly via the phone or Skype
(Copy Paste FTW)
Calling the Call Centers
That would be an issue you 'may' be able to fix via calling the call center.
http://www.swtor.com/support/helpcenter/5200#contact-form
This Link Contains all the numbers and options open to you for calling one of the many Swtor call centers.
Or you can add +18553452186 to your contacts on Skype as this is how I do it from NZ.
*The team that handle the phones are really quick and helpful in these areas, whole thing should take you less then 5 minutes if you use Skype.