I'm sorry for any trouble caused by the unexpected circumstances. Sorry for any disruption this
may have brought about. Kindly accept my deepest apologies for any inconvenience you might have encountered. Regrettably, we can't to meet your requirements at this time. Sorry for any letdown this may cause. Apologies for any trouble you may have arisen. I apologize if there was any confusion in sharing information. Kindly pardon me for any actions have brought about any inconvenience. I understand that this must be annoying. Sorry for any frustration this may have caused. Rest assured that we are doing our best to resolve the issue as promptly as possible. I'm truly sorry for any inconvenience you may have faced because of this circumstance.