The true makeup of a man will always dominate most of his everyday actions. ~ Ochuko
A man's manners are a mirror in which he shows his portrait. ~ Johann Wolfgang von Goethe
Personalities don’t hide. If a person is calm, gently, proud, arrogant, ill-mannered etc. it shows up one way or another no matter how hard he/she tries to cover-up. Now, don’t get me wrong; this is different from a person’s patience being tried deliberately.
If you dialed a number in error, and someone at the receiving end says, “hello” be courteous enough to respond by saying, “hello, sorry I dialed the wrong number” before you hangup. It is serious bad manners to dial a number in error and at the same time hang-up when the person at the receiving end is saying, “hello”. You never know if the person on the receiving end is a senior/elder or sick person who managed to pickup the call. You do not want to complicate their problems.
Likewise, if someone calls you in error, be kind enough to tell them they dialed the wrong number, and do not be hash and brash about it. Always think and act “right” by thriving to be that "one" refined or genteel person out of a billion persons. Would you?