Why does it take 3 or even 4 people to get to someone that handles landline service ?

When I call AT&T to get help with my Landline, I always have to go through 3 or 4 people and everytime having to tell them my account info and go through the hole spill of what my issue is. I was on the phone yesterday from about 11 am till almost 3 pm its was HORRIBLE !! I was so stressed it ruined my hole day !! So I waited today to say something about it because it I had done it yesterday I would have not chosen my words very nicely!! To be such a huge company I would think they would be better organized !! And down below when it ask to put your topic in the box it has nothing about landline !