I'm sorry for any trouble caused by the unforeseen circumstances. Sorry for the disruption this may have caused. Please accept my sincere apologies for any disruption you may have experienced. Regrettably, we can't to meet your requirements currently. Apologies for any letdown this may cause. Apologies for any inconvenience that may have encountered. I'm sorry if there was any misunderstanding in communication. Kindly pardon me for any actions have caused any inconvenience. I get it that this must be annoying. Apologies for any inconvenience you might have caused. Rest assured that we are working to resolve the issue as quickly as possible. I'm truly sorry for any inconvenience you may have faced due to this situation.