I apologize for any trouble caused by the unexpected circumstances. My apologies for any inconvenience this may have brought about. Kindly accept my sincere apologies for any disruption you might have encountered. Regrettably, we are unable to meet your requirements at this time. Apologies for any disappointment this may bring. Sorry for any trouble that may have encountered. I'm sorry if there were any misunderstanding in sharing information. Please forgive me if my actions have caused any inconvenience. I get it that this may be frustrating. Sorry for any frustration you might have caused. Rest assured that we are doing our best to resolve the matter as promptly as possible. I'm truly sorry for any inconvenience you might have faced due to this situation.