I'm sorry for any trouble caused by the unforeseen circumstances. My apologies for the inconvenience this may have caused. Kindly accept my sincere apologies for
any inconvenience you might have encountered. Regrettably, we can't to
fulfill your request currently. Sorry for any disappointment this may cause. Apologies for any trouble that may have encountered. I apologize if there was any misunderstanding in communication. Please pardon me if my actions have brought about disruption. I get it that this may be annoying. Apologies 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 may have faced due to this situation.