Question: Do you think it's better to make a complaint in person or in writing?
Analysis

1. Discuss the advantages and disadvantages of making a complaint in person versus in writing. 2. You can also share your personal preference and the reasons behind it, such as immediacy, clarity, record-keeping, emotional impact, etc.

Synonyms
Try these synonyms instead of repeating the question:
  1. complaintgrievance; objection
  2. in personface-to-face; directly
  3. in writingthrough written communication; via letter/email