I apologize for the inconvenience caused by the unexpected circumstances. Sorry for any inconvenience this may have brought about. Please accept
my deepest apologies for any inconvenience you may have experienced. Regrettably, we are unable to meet your requirements currently. Sorry for any letdown this may cause. Apologies for any trouble that may have encountered. I'm sorry if there was any confusion in communication. Please forgive me if my actions have brought about any inconvenience. I get it that this may be frustrating. Sorry for any frustration this may
have caused. Rest assured that we are working to resolve the matter as quickly as possible. I'm truly sorry for any disruption you may have faced due to this circumstance.