Few thing I am not clear.
When you account was unlocked and returned, It was already banned or you did not removed the post created by hacker after you get unbanned?

I will suggest you to create a new thread about your problem because
1. This thread has served the intended purpose.
2. Somebody now need to read so many post to understand , that you can easily summarize in one post.
3. Put some fully explainable title like.
    Account recovered in banned state,Mods please help.
or
    Account banned now due to the activities by hacker,please unban