I apologize for the inconvenience caused by the unexpected circumstances. My apologies for any disruption this may have brought about. Kindly accept my deepest apologies for any disruption you may have experienced. Unfortunately, we are unable to fulfill your request at this time. Apologies for any disappointment this may cause. Sorry for any inconvenience that may have arisen. I apologize if there were any confusion in communication. Kindly forgive me for any actions have caused any inconvenience. I get it that this must be annoying.
Sorry for any inconvenience you might have caused. Please be assured that we are doing our best to resolve the matter as promptly as possible. I'm truly sorry for any disruption you might have faced due to this circumstance.