Deficiency of character will come out as behavior, either as a bad act (an act of commission) or as a failure to act when one should (an act of omission). When a person treats you with indifference, this is an act of omission because you are a person of worth and others should not treat you as if you were invisible. This, of course, does not mean that we have to pour ourselves out for everyone we meet. Your example centers on actual interactions which make you feel ignored. We should not treat others as if they do not count or have no worth (an act of omission). When this occurs, those so ignored can, if they choose, forgive the other.