Texting...

So why is it that people will text you something and then be so impatient that that they just keep resending it over and over, or say i guess your too busy for me, or i love when im sleeping and when i wake up i have like ten messages from the same person saying, (are you up, i guess your still sleeping, or wake up) yeah like my phone can talk and tell me your text message... come on people. Chill out!!!