We are not going to remove or decrease any ban durations, so you will have to wait for your ban to expire. I know, you told me that you admitted the usage of the tool ( although you did not use ) because you were promised to get unban, but you should have been more careful with your words and decision you took.
If we unban you, then we will have to unban all others who would say the same as you do. It would obviously be unfair to them if we just unban you and not them. I know there's a difference in your case, but still you at some point admitted for using the tool. So, it can't be helped now.