Back to Bank of America

I made a deposit. Turns out they input the wrong amount. After going through their phone menu system 3 times through 4 levels, I finally found a person. "I can fix that" she said, "please hold." 20 minutes later it was fixed but in the middle she comes back to me to tell me it is taking a while because of a computer glitch. I ask why I need to stay on hold, can't they just fix it without me. Apparently not - "we are accessing your account." So after another 10 minutes they say it is fixed. I say thank you and that is it - so why did I have to sit and listen to the elevator music?