SHAMEFUL AND UNACCEPTABLE SERVICE

my husband was booked on British Airways flight BA6415 for this evening supposed to board at 19:55. He was checked in online . an email notification was sent late this afternoon to state that the flight has been delayed at will now only depart at 23:55 and that the boarding gate will close at 23:10. my husband was already checked in online and was at the airport at 22:20. He was refused entry and told that he was supposed to be there over an hour earlier despite showing them the email that was sent. He received a phone call to notify him that he will be put on another flight at 09:45 tommorrow morning. He was also told NO provision will be made for his overnight stay or for his additional travel expenses. This is a British Airways error and is UNTIRELY UNPROFESSIONAL AND RATHER DISGRACEFUL - SHAME ON YOU! Your staff are unprofessional and dont care about your customers. This is not an hours inconvenience but a full overnight stay involving additional expenses due to your error!