A second mistake:
*NEVER* say ‘No comment’ (or take the 5th, or say ‘on the advice of my lawyer I say nothing’).
“No Comment” = “I’m guilty as sin, don’t care, and F-U”.
The only acceptable response in the 21st century is to take FULL responsibility immediately, state clearly what you *HAVE DONE* (not ‘are going to do’) to completely rectify the situation, state that the employee involved has been fired, list what your are doing to recompense the wronged party, and do all of these before the second post hits Facebook, X, or twitter.
Taking more than 10 minutes to completely rectify a gaffe such as this is suicide for all but the very largest corporation.
I hope nobody takes that advise. Remain silent.