Being late isn’t always a sign that someone doesn’t respect your time. Sometimes it’s a symptom of respecting too many people’s time—and being too optimistic about how many they can squeeze in.
Check every man/woman who is engaged with too many things, sometimes he/she appear to people as one who doesn’t respect nor honor invitations among many others.
Sometimes, we sounds like counting offences to such people, but there’s what we called “common understanding” which must be acknowledged at all level
Sometimes, when such thing happen to any of us, we must try our very best to bring it to the notice of the offender; and hear how he/she will be sounding before we draw ling for our conclusion.