My most important rule is this: if you ask to chat on a platform, and we are chatting, DO NOT DISAPPEAR. Courtesy and respect should be part of your life. Just type “sorry Sir, gotta run” or something. I don’t care if it’s because your grandmother just walked in, or because you decided I’m not who you are looking for. Fine. Just acknowledge your exit. This is the one transgression that earns you zero second chances.