Try this activity so as to know how to write a formal letter to complain about something.
Thank you to BBC-Schools-Teachers
If you click on the BBC link, you can find many other interesting activities and games to help you in your writing skill, for example.
**** For Intermediate and Advanced levels: Go to these these links to see some examples and layouts of letters of complaint:
- At the consumerist
- At livetinc
**** And this game also for Basic level: Do the following quiz to check how much you know about how to write a formal or an informal letter: