Not everybody has been affected... in some cases the fraud has been as simple as the fact that peoples accts have been frozen before they could use all of their credit...
The original article has become lost (not erased in MyVoipProvider's Web update)
You can see most of the original info at:
Rip-off Report: Betamax GmbH & Co KG, FINAREA SA VOIP provider scamming and Unauthorized charges Kln Germany
Betamax VoIP Credit - Scam - Fraud - Cheating | MyVoipProvider.com
Betamax Scam Update | MyVoipProvider.com
(On a personal note, I haven't had any issues with them yet)