You can opt out of (quit) SFI immediately by going to: https://www.sfimg.com/MyAccount/Remove
If you choose to opt out, we're truly sorry it didn't work out. We try very, very hard to provide the best program we can for all our affiliates because you are our partners. We are successful ONLY if our affiliates are successful. Should you decide to rejoin us sometime in the future, we will be glad to work with you again. Our best to you!