I'm sorry for any trouble caused by the unexpected circumstances. Sorry for the disruption this may have brought about. Kindly accept my sincere apologies for any disruption you might have encountered. Regrettably, we are unable to meet your requirements at this time. Sorry for any letdown this may bring. Sorry for any inconvenience that may have encountered. I apologize if there
were any confusion in sharing information. Please forgive me if my
actions have brought about any inconvenience. I understand that this may be annoying. Sorry for any frustration this may have elicited. Rest assured that we are doing our best to resolve the matter as quickly
as possible. I sincerely apologize for any inconvenience you might have faced due to this situation.