The number of keys you used so far suggests that you don't legally own the game and instead pick up any CD keys you can find to be able to play it after the last one was locked.
Feel free to prove the opposite, but until then the global ban will stay in place.
Note that GISP bans (i.e. non-global ones) can be placed by any UTAN user and only affect the UTAN user's own servers. Your attitude certainly doesn't help getting those lifted either.