I apologize for any trouble caused by the unexpected circumstances. Sorry for the disruption 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 currently. Sorry for any letdown this may bring. Apologies for any inconvenience you may have encountered. I'm sorry if there was any confusion in communication. Kindly pardon me if my actions have caused disruption. I get it that this must be annoying. Sorry for any frustration you might have elicited. Rest assured that we are working to resolve the issue as promptly as possible. I sincerely apologize for any disruption you might have faced because of this situation.