I like the delay in smart phones from when you hit the button to hang it up and when it actually hangs up and cuts the audio. I stay on and listen until it does finally cut it. Caught my adult kids talking crap about me many times because they thought the phone was hung up and I couldn’t hear them. lol
If you are going to dump on who you just got off the phone with, it is a good practice to wait about 10 seconds after you hit the button before you do.
Your next call should have been to tell them they’re out of the Will.