Writing a complaint letter in IELTS General Writing Task 1 requires a formal tone and structure. Start by explaining the issue clearly and politely in your introduction, then move on to provide specific details about what went wrong. In the body, express your dissatisfaction, but remain respectful and professional. Conclude by stating what action you expect to resolve the situation. Writing a complaint letter is common in the IELTS exam pattern, so practice using appropriate language and tone for formal letters.
Understanding the IELTS exam pattern will help you organize your letter effectively. Make sure your points are logical and well-developed, addressing each bullet point given in the task prompt. This will ensure that you meet the task achievement criteria and score well in the exam.