This is too bad, Lots of accounts are being hacked by the smelly hackers. Really I know how to secure my wallets but still, I don't know how to secure enough my bitcointalk account. I wish if bitcointalk may add 2FA system to secure the accounts then that will be great.

And, By reading your messages, I think you bought that btalk account, right? And he the seller or anyone hacked again the account  And, for this reason, you will not get help from the moderators.