All payments in Stunnerz are processed by Verotel (verotel.com). Card details for end-users are saved by Verotel for recurring payments, however not visible to anyone, besides the last 4 digits.
It's the Fan's responsibility to cancel the rebill when they no longer wish to continue. This can be done either by writing to Stunnerz support team in the contact form or deleting the account from the Fan profile page.
The statement descriptor for charges made to Stunnerz are as follows: vtsup.com*WS Technol