Which method is NOT effective for communicating a customer request to a technician?

Having a car porter relay the message is not an effective method for communicating a customer request to a technician because it introduces multiple points of contact that can lead to miscommunication. The information may be misinterpreted or altered as it passes through another person, resulting in potential errors in understanding the customer's needs. Direct communication methods, such as speaking directly with the technician, using text messages, or providing a written service request, allow for clarity and ensure that the technician receives the exact details of the request. These methods facilitate direct and immediate exchanges, which help to avoid confusion and ensure that customer concerns are addressed accurately and promptly.