Prerecorded call for a "business opportunity" which is nothing but an illegal pyramid scheme called millionaire money machine.  You "buy in" for $500  to $20,000.  Then for everyone you get to buy in for $500-$20,000, you make money, just like you were suckered into it.  However, you also have to pay for the "telemarketing" system, just like the one that called you, so you are also committing a telemarketing offense for making prerecorded calls.