Dear Sir/Madam,
I write to you to bring to your attention that I was travelling from __________ (location) to ____________ (location) on date __/__/____ (date). It is to inform you that my train number was ____ (number) and I am also enclosing my train ticket for your reference.
This email is to inform that I had to wait ____ (hours) at the station and I had a very bad experience due to delay in arrival of the train. As a result of, the train arrived late at the ____________ (location) and I had to face many issues due to the same.
I hope that you will consider this as a genuine issue and take strict action against it. If you wish to discuss further, you can always contact me at _____________ (contact number).
Regards,
___________ (Name),
___________ (Contact Details)