Hi
There is a vox dealer who owns the domain voxonline.co.za who is spamming and not vox themselves I am sure they would not want to jeopordise a multi million rand business for a fews clients, I have reported the spammer to vox and to thier ISP and as far as I know the person will be dealt with.
As for Vox being a pyramid scheme, it certainly is not they offer people the opportunity to become dealers and sell their product and in return receive commission there is no pressure though to purchase the product to become a dealer.
referral marketing / network marketing is very different from a pyramid scheme if you would like the different definitions let me know, Vox is a member of the DSA and operate a perfectly legit buisiness and offer a great opportunity for anyone to make some extra bucks.
The short of it all is that you cannot blame the company (Vox) for spam when its a the actions and fault of a individual who does not know or understand the art of internet marketing.