i had to look up the difference between "a cult" and the "occult". Cult sounds like a pyramid scheme, which is tempting to join when one needs money (Tupperware sales, Mary Kay, etc). i don't remember if tupperware actually is one.
I suppose there could be a cult that could be a pyramid scheme built around the occult where such knowledge is monetized in a systematic way.
either way, if the knowledge reference isn't open source, and they follow up with phone calls...probably good to skedaddle.