What interjection is common in English that is used along or right before a phrase, in which the speaker is stating some regrettable lack on the part of his interlocutor, which according to the speaker's view either could have been avoided or still can be avoided.
(interjection) Brandon! You never seem to take Jack's words seriously, but, for your info, many have already benefited a lot from his advice. He rarely says anything empty.
(interjection)! I did tell you to go to a law school, but you wouldn't listen you chose arts. Now look in what a pitiful financial state you are! Compared to other peers from your group with whom you were on par in all possible regards, you've nosedove!