I'm sorry for the inconvenience caused by the unexpected circumstances. My apologies for any disruption this may have caused. Kindly accept my sincere apologies for any inconvenience you may have experienced. Regrettably, we are unable to meet your requirements at this time. Apologies for any letdown this may bring. Sorry for any inconvenience that may have arisen. I'm sorry if there were any confusion in sharing information. Please forgive me if my actions have brought about any inconvenience. I get it that this may be frustrating. Sorry for any frustration you might have elicited. Please be assured that we are working to solve the matter as quickly as possible. I'm truly sorry for any inconvenience you may have faced due to this circumstance.