I'm sorry for the inconvenience caused by the unforeseen
circumstances. Sorry for any disruption this may have caused. Kindly accept my sincere apologies for any disruption you may have experienced. Unfortunately, we can't to fulfill your request at this time. Apologies for any disappointment this may cause. Sorry for any inconvenience you may have encountered. I apologize if there was any misunderstanding in communication. Please pardon me if my actions have brought about any inconvenience. I get it that this may be frustrating. Sorry for any inconvenience
this may have caused. Rest assured that we are working to resolve the matter as quickly as possible. I sincerely apologize for any inconvenience you may have faced because of this circumstance.