Method for validation of electronic transactions

An electronic transaction is validated by a customer placing a telephone call via the telephone network. The call is routed to a validation system and the telephone call provides the validation system with a transaction identification which identifies a previous electronic transaction between the customer and a vendor. The validation system communicates with the vendor server via a data network to retrieve a price for the transaction. The validation system then sends the price to the customer via the telephone call and awaits an acceptance by the customer. Upon receipt of the customer acceptance, the validation system sends an authorization to the vender server via the data network indicating that the transaction has been validated. The validation system also sends the transaction price to a network billing node which results in an additional charge to the customer's telephone bill.