I have book Stenaline trip from Harwich to Hook of Holland on the 15/08/2021 at 23:00 (booking no. [protected]). On Fri 13/08 circumstances has changed and I have to postpone my trip to 5th September 2021, I have flexi ticket which costed extra so I could changed ticket up to 2hours before travel. I logged into my account on Fri 13/08 afternoon to change booking, under "change my booking" there was info to use message service on the web to change booking so I did message, no response, no change in booking, I message again Sat few times and Sunday, no response. I panic on Sun as ticket was £486 so I tried to cancel so get response if I proceed with cancelation I will not be refunded as it's less then 48hours, I have not proceed with cancellation but emailed back that I have tried for more than 48hours to change it. I received no response. Finally I called Stenaline directly and they changed my booking for 5th of September, but advice me to contact Aferry for ticket and refund as ticket on the 5th is slightly cheaper. I message again Affery few times no response. On my account is still only trip for the 15/08. Can you please assist.