I usually get 1 of these calls per month.
I like to see how long it takes before they swear at me and hang up.
One time i started the conversation with "I like pie", and spent the next 20 minutes telling this guy about all the pies i have eaten in my life.
My favorite of all time was a lady with a very attractive voice. Every time she told me to do something, i made up a bullshit error message. She was sounding very confused when she finally asked me what version of windows i was using and i told her windows 19.
She tried to explain to me that the latest version of windows was windows 7, but about halfway through my story about how i wanted a very fast computer, so i built a time machine to go buy a new computer in the future, she started using some very colorful language, including a few words that i have never heard before, and i can swear in 17 languages.
Every time i get bored, i watch the phone and hope for another call from them.