I would like to modify the date of my ticket VTE-BKK booking no. 0017AH which is not used on September 20, 2013 to morning flight of November 1, 2013 . I was informed on September 20, 2013 by call center that the penalty fee of 600 Baht shall be apply and I have to modify within 60 days of the original departure date.
Please advise me how to pay the fee. Is it possible to pay via ATM machine?