I'm sorry for any trouble caused by the unexpected circumstances. My apologies for the inconvenience this may have brought about.
Kindly accept my deepest apologies for any disruption you may have experienced. Unfortunately, we can't to meet your
requirements at this time. Sorry for any disappointment this may cause. Sorry for any trouble that may have arisen. I'm sorry if there was any misunderstanding in communication. Please pardon me for any actions have brought about disruption. I get it that this must be annoying. Apologies for any frustration this may have elicited. Please be assured
that we are doing our best to resolve the matter as promptly as possible. I'm truly sorry for any disruption you may have faced due to this situation.