This is the type of response you shouldn't make. Instead you should do your homework and then come back with the receipts.
E.g. figure out why this happened, express why it shouldn't have happened, why it should happen never again, how it is understandable how they feel, express that you cannot expect them to come back, make them an actual offer that would make them come back (e.g. by giving them a better place at the table or offering compensation), etc.
But "I am sorry you feel" is bordering on gaslighting. That is as if you are sorry your wife feels sad after you beat them. You should feel sorry and ashamed for doing the beating, not for how someone feels as a result of it.
The described things are clearly unacceptable and whether someone feels outrage or not doesn't make them more or less acceptable.
E.g. figure out why this happened, express why it shouldn't have happened, why it should happen never again, how it is understandable how they feel, express that you cannot expect them to come back, make them an actual offer that would make them come back (e.g. by giving them a better place at the table or offering compensation), etc.
But "I am sorry you feel" is bordering on gaslighting. That is as if you are sorry your wife feels sad after you beat them. You should feel sorry and ashamed for doing the beating, not for how someone feels as a result of it.
The described things are clearly unacceptable and whether someone feels outrage or not doesn't make them more or less acceptable.