Additional features are billed to the account credit card on file, when the feature is added to the account or at their next billing date. When the charge for the additional fee takes place depends on the feature & billing term. Voice Studio: The $75 charge for voice studio is billed immediately when you submit your order.  Call Blasting: Is billed $10/month for customers on monthly plan & annually for customers with an annual billing contract.  Ruby Receptionist: Customers will be charged on monthly for Ruby, regardless if they are on monthly or annual plan.