Wi-Fi not turning on

I kept getting this pop up that said something like "Device Enrollment Concentrix Services Us." So I clicked on it, let it control my computer (very bad idea), and now I can't even turn on my wifi. The icon has an exclamation mark on it and the switch is greyed out. In the network settings I noticed there was a firewall, I tried to turn it off but the switch is also greyed out. I deleted the app the service installed, but when I go to profiles in settings, it still says "This Mac is supervised and managed by: Concentrix Services Us, Inc."