CoD4 Multiplayer problems?

I've been trying to play CoD4 for the past 3 or so months with no luck, When i connect to the multiplayer server, it says i'm currently rank 1 and when i try to search for a game, the playlists are Greyed out and i cant select any of them. When i go into barracks my Level and challenges are still the same but it says i currently have -66750 XP. Could i have been Reset by a hacker? Because i do remember trying to find a S&D game and popping up in a hacked lobby which i left right away. i don't use hacks on any of my console games so i have no clue when it comes to what hackers/modders can do.

That's odd. Chances are the host of that modded lobby you got put into was a ****** and decided to fuck with you.

Just do the 10th 55 USB hack, and it'll all possibly go away. If you don't know how to do the USB hack, then... feel free to VM me on my main Nebulaa once I get done with the post-ban. It's noob-friendly and extremely easy.