I'm sorry for the inconvenience caused by the unexpected circumstances. Sorry for any inconvenience this may have caused. Please accept my sincere apologies for any inconvenience you might have encountered. Regrettably, we can't to fulfill your request at this time. Sorry for any letdown this may cause. Apologies for any inconvenience that may have encountered. I apologize if there were any misunderstanding in sharing information. Kindly forgive me for any actions have brought about any inconvenience. I understand that this must be frustrating. Apologies for any inconvenience this may have elicited. Please be assured that we are doing our best to solve the matter as promptly as possible. I'm truly sorry for any disruption you might have faced because of this circumstance.