Making complains 

  • I'm sorry to have to say this but i need to tell you.
  • Maybe you forget to.......
  • I have  a complain to make...
  • I'm afraid there is a problem with.....
  • I understand it is not your fault  but.....
  • I want to complain about .....
  • I am not satisfied with......
  • I hate to tell you this .
  • I am angry about the way you treat me.
  • I'm really not happy.
  • I would like to speak to the manager.
  • Excuse me but you are standing on my foot.
  • The service here is very slow.
  • My food is too cold.
  • The room is a mess!
  • It's too noisy to concentrate on my work.
  • The wi-fi connection is terrible here.
  • This order is not what i asked for.
  • My laptop keeps crashing.