There was a note inside offering their apologies for being out of their trademark box, so they included this great makeup bag for the inconvenience! (dressedfortime.com)
Generally the resignation letters are offered in advance but if you have to take up an immediate resignation, you must offer your apologies as well. (template.net)
Even if a doctor offers no apology, patients are often satisfied merely to receive an explanation of what happened and expressions of regret, he said. (massachusettsinjurylawyerblog.com)