Please help me how to solve this problem? They say that this means I was banned, but where is it from? If it was banned to me, then someone came into my account.
You were banned for using a ghost mod to cause as much carnage as possible. As a side-note, you were also speedhacking.
If you want to make an unban request (Note: we take use of cheats/hacks extremely seriously, especially if done with complete malicious intent), look here: http://forum.city-driving.co.uk/showthread.php?tid=2