[iaskwhy]

This happened to me once. I was not allowed in the building so I called a colleague to bring me in as a visitor. Upon trying to login, "account has been disabled". Called IT, "you've been fired". Called my line manager, "I have no idea what you're talking about". Turns out someone forgot to extend my contract on the system.

[Chris2048]

If that's the case, the IT person was a dick to tell you / assume you'd been fired.