"Billing agent" means any entity that submits charges for products, goods, or services to the billing carrier on behalf of itself or any service provider.
"Billing carrier" means any telephone company that issues a telephone bill directly to customers.
"Service provider" means any entity that offers products, goods, and services to a customer and that directly or indirectly charges to or collects from a customer's bill received from a billing carrier an amount for such products, goods, or services.
Va. Code § 56-479.3