A complaint letter<\/strong> is written to voice one\u2019s problem and have it fixed at the earliest. Complaint letter is a semi-official means of communication as compared to verbal means.<\/p>\n The complainant pens down his\/her problem, asks concerned authorities to intervene and sort out the grievance and also suggests remedies if possible. Such letter should be concise, brief and written in a polite yet stern tone to imprint one\u2019s situation.<\/p>\n Use our samples and few useful points discussed below to write an effective complaint letter for poor service\u00a0or product that you have received. It can be written to a business or\u00a0management.