I stopped using Verotel for that exact reason. They are fine for checking or phone billing but you should not use them for credit cards as they do not scrub hard enough. If you do use them do not allow any asian transactions to go through as they will most likely all get charged back.
I use CCBill, 2000Charge and Billing France. Once Verotel takes me off there suspension list I will use them again for checking and 1-900.
Hope this helps.
Chris
www.chezchris.ca