are you bored when you call a phone several times and nobody answer it?

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Phone call becomes an important way of us to communicate with each other,maybe it is the most important way.as the huge advance of the communication scince,more and more people have a mobile phone rather than a fixed phone.we do many phone calls per day ,and we all has some unhappy experience that we call a number several times and nobody answer your call.when you have some special things need to call that people to talk about them,nobody answering your call is unbeared bad thing.is it often happened of you ?and how to deal with it?