I apologize for any trouble caused by the unforeseen circumstances. Sorry for any disruption this may have brought about. Please accept my sincere apologies for any inconvenience you may have experienced. Regrettably, we can't to fulfill your request currently. Sorry for any letdown this may cause. Sorry for any trouble you may have encountered. I apologize if there was any misunderstanding in communication. Please forgive me for any actions have caused any inconvenience. I understand that this may be frustrating. Sorry for any frustration this may have caused. Please be assured that we are working to resolve the matter as quickly as possible. I sincerely apologize for any disruption you may have faced because of this situation.