I'm sorry for any trouble caused by the unexpected circumstances. Sorry for the inconvenience this may have caused. Please accept my deepest apologies for any inconvenience you may have experienced. Unfortunately, we can't to meet your requirements at this time. Apologies for any letdown this may cause. Sorry for any trouble you may have arisen. I apologize if there were any confusion in communication. Kindly forgive me for any actions have brought about any inconvenience. I get it that this must be annoying. Apologies for any inconvenience this may have caused. Please be assured that we are working to solve the issue as quickly as possible. I'm truly sorry for any inconvenience you may have faced because of this situation.