Final answer:
The information provided does not mention a character named Craig or a voicemail, hence it's impossible to determine who left him a voicemail without additional context or the correct portion of the story.
Step-by-step explanation:
It appears that the question is referencing an incident from a narrative, possibly from a novel or a short story. Because the text provided does not contain any information about a character named Craig or a voicemail he received, it is not possible to accurately determine who left Craig a voicemail the next day.
It is essential to have the correct context or part of the story that mentions Craig and the voicemail to provide a specific answer to this question. Clarification or additional information would be needed to answer the student's inquiry properly.
Understanding the context is vital in literary comprehension and discussion, which emphasizes the importance of paying close attention to plot details.