Did you ever have this happen to you? You are on the phone with someone who you can tell is not giving you their attention. You can hear them opening and closing tabs on their computer while you are pouring your heart out. Then they make a response proving they were not listening.
I would just like those who do this to their friends- that the friend they are disrespecting likely knows you do this. But they are too polite and hurt to tell you. If you are not actively listening to a person on the telephone.... It does show no matter how clever you think you are covering up. I had my partner and one friend I really believed in do this to me. And it really really hurts when people pretend to be friend and brush you off when you need someone to care.