I'm sorry for the inconvenience caused by the unforeseen circumstances. Sorry for any disruption this may have caused. Please accept my deepest apologies for any disruption you might have encountered. Unfortunately, we are unable to meet your requirements currently. Apologies for any letdown this may bring. Apologies for any trouble you may have encountered. I'm sorry if there were any misunderstanding in sharing information. Please pardon me for any actions have caused disruption. I get it that this must be frustrating. Sorry for any frustration you might have elicited. Rest assured that we are working to resolve the matter as quickly as possible. I sincerely apologize for any inconvenience you might have faced due to this situation.