Re: Billing error {0} SWTOR

You would need to call customer service to find out what is going on.  It may be something related to your account or another account related error but the would be the only ones to see what happened.  You may contact them using the below information:

For details on how to contact SWTOR support you can follow the steps outlined in this article here : How to get help with STAR WARS™: The Old Republic™

[CM - Edited post with updated article on how to contact support for STAR WARS™: The Old Republic™]