I apologize for any trouble caused by the unexpected circumstances. My apologies for any inconvenience this may have caused. Kindly accept my sincere apologies for any inconvenience you may have experienced. Regrettably, we are unable to fulfill your request currently. Apologies for any disappointment this may bring. Apologies for
any trouble that may have encountered. I'm sorry if there were any confusion in communication. Please forgive me if my actions have brought about disruption. I get it that this may be frustrating. Sorry for any frustration you might have caused. Rest assured that we are working to solve the issue as promptly as possible. I sincerely apologize for any inconvenience you might have faced due to this circumstance.