Dear Sir/Madam, I am writing to express my dissatisfaction with the service I received during a recent train journey booked with your company. A week before the journey, I purchased train tickets online for my travel.
Dear Sir or Madam, I am writing to formally complain about an issue I faced while attempting to travel with your company a week ago. I hope you will take the necessary actions to address the issue and make sure it does not happen in the future.