I'm sorry for any trouble caused by the unexpected circumstances. Sorry for the inconvenience this may have caused. Kindly accept my sincere apologies for any inconvenience you might have encountered. Unfortunately, we are unable to meet your requirements currently. Apologies for any disappointment this may bring. Apologies for any inconvenience that may have encountered. I'm sorry if there were any misunderstanding in communication. Please pardon me for any actions have brought about any inconvenience. I understand that this may be annoying. Apologies for any inconvenience you might have elicited. Please be assured that we are working to solve the matter as promptly as possible. I sincerely apologize for any inconvenience you may have faced due to this circumstance.