Please think of the person you are telephoning!

I received a call yesterday from a lady I had not seen in a while and, whom I purposefully did not wish to see. She just spoke at me about her hobby for fifteen minutes without drawing breath. I eventually ended the call by saying I was going out for dinner and had to go and put the 'phone down. I am still reeling half a day later. What is wrong with people?! Are they just not aware of what they are like?