I'm sorry for any trouble caused by the unexpected circumstances. My apologies for any disruption this may have brought about. Please accept my deepest apologies for any disruption you might have encountered. Regrettably, we can't to meet your requirements at this time. Apologies for any disappointment this may bring. Sorry for any trouble you may have arisen. I apologize if there were any misunderstanding in sharing information. Kindly pardon me if my actions have caused disruption. I understand that this must be frustrating. Apologies for any frustration you might have elicited. Please be assured that we are working to solve the matter as promptly as possible. I sincerely apologize for any disruption you may have faced due to this circumstance.