The phrase "a complaint letter" is correct and usable in written English.
You can use it when referring to a letter that expresses dissatisfaction or raises an issue regarding a service, product, or situation.
Example: "I decided to write a complaint letter to the company after my recent experience with their customer service."
Alternatives: "a grievance letter" or "a letter of complaint".
Download a complaint letter here.
One of my amazing relationships started with a complaint letter, but I turned that around into something positive.
WWF-Pakistan said it had sent Nida Azwer a complaint letter and notified the provincial wildlife authority.
Damon Chang, Alison's brother, wrote in an e-mail message from Taiwan that he "personally sent Virgin Mobile a complaint letter" asking for an explanation.
After more hard work from my social worker, along with a complaint letter I wrote while sectioned on an adult psychiatric ward, the funding was finally agreed.
The site gives advice on writing a complaint letter and emphasizes the importance of sending a compliment when something goes right.
The Health Bureau has two departments [for complaint management], and each district has a mediation office, a district government website or a mayor-mail [to receive complaints], and a Complaint Letters and Visits office…Far too many heads of departments within the health sector; it is chaos.
This may include assistance with constructing a complaints letter, drafting, or attendance at meetings.
Mrs Turney, who lives near Maidenhead, Berkshire, downloaded a model complaint letter from a website after watching a TV documentary about bank charges.
In this episode, Bob reads a charming complaint letter from a six-year-old girl who asks why kids can't enter the caption contest.
The Freedom From Religion Foundation, a nonprofit organization that pushes for the separation of church and state, wrote a formal complaint letter to Ryan and McConnell.
