You can send a email to the webmaster at support@vixenx.com

To Deactivate or support of your membership:
https://epoch.com/billingsupport (Epoch.com)
https://segpaycs.com/spsolo.aspx (Segpay)
http://support.fxbilling.com/ (FXBilling)
https://support.ccbill.com/ (CCBill)
https://wtseticket.com/ (WTSeTicket.com 800-975-5616)
http://www.gxbill.de/ (GXBill - European Debit/Lastschrift)