Final answer:
The phone call is generally considered the least effective vehicle when dealing with customer complaints. Email and live Internet interactions provide better communication channels.
Step-by-step explanation:
The phone call is generally considered the least effective vehicle when dealing with customer complaints.
Phone calls can often be frustrating for both the customer and the service representative due to issues with communication, misinterpretation of tone, and lack of visual cues. It is also challenging to keep records of phone conversations.
On the other hand, email allows for clear written communication, provides a paper trail, and allows both the customer and the representative to take their time to respond thoughtfully.
Additionally, live Internet interactions such as chat or messaging provide a similar advantages as email, with the added benefit of near real-time interaction.