NB: This is information is still UNCONFIRMED.
On the Epsilon website, it is stated a fax number (1-866-FUN-CULT) you can call, and a fax will be returned:
Here is the content of the fax you recive:
How much is your soul worth?
We’ve put a price on salvation and it’s a price worth...
Around San Andreas you'll find several ads and signs with web adresses, fax and phone numbers - here are some of them:
GTA San Andreas websites
• The Epsilon Program website
• Darius Fontaines website
• O. G. Loc's website
• Maccer website
• The Cluckin' Bell website