I had this happen a couple of weeks ago. Lasted about 48 hours, then I was back. No clue what the cause or reason would be, but I think there's a fair chance it'll restore you as the week goes on.
I fully admit I was checking to see where I was in the US Top 10, noticed you weren't there anymore, and fleetingly thought "finally... I've killed Plebian and taken his place." If you're not back by Wed though, I'd message HellLois. Maybe this is a side effect of the score updating process, and maybe CB is aware of it, but it might be worth bringing to their attention directly.
Congratulations mortal, thou hast ascended to the status of Demigod and thus no longer shalt thou appear among lists of mere mortal players. Do you want your possessions identified? [ynq] (n)
Plebian is no longer part of the standing ranks... Now he's a Black Ops ITS asset. CB will airdrop him into conflict zones when they need an event won. His existence is only rumor.