From the archive

An apology without change is permission to do it again

This applies to you too. If you understand everything, try not to make your understanding the main event in someone else's pain. Don't make them comfort you because now you feel ashamed. Fix what you can. Return it. Finish it. Give notice. Accept the refusal. Investigate why the promise failed another encounter with reality. And don't declare yourself a good person at the end of the conversation. That's not the question that needs answering right now.