I had to contact my ISP's tech support because I suddenly lost my Internet connection. I explained to the guy who answered that my router was working fine, and that my devices could connect to my WiFi network, but they didn't have Internet access.

He was so confused because he didn't understand that WiFi and the Internet are not the same thing. He then made me reboot my router and reset my configuration (like I hadn't done that before) and eventually ran out of ideas and scheduled a technician to visit my house next week. What a moron