You can submit a request for the investigation of a complaint that you have submitted and that has not been satisfactorily resolved by the railway undertaking involved (HELLENIC TRAIN AE, STASY SA) or the station manager.

You can submit a complaint to the national enforcement body, i.e. the Railway Regulatory Authority (RAS):

• within three months after the railway undertaking has rejected your complaint
• after 3 months from the date of lodging your complaint and after you have not received a reply

You will need to:

• fill in your details
• attach the railway undertaking's reply and any other supporting documents you consider necessary to substantiate your complaint

You have the right to submit a complaint to an alternative dispute resolution body in order to seek individual redress.