I suggest going with the admins/global mods. Just sign a message from an old address.
Otherwise, say you pay for the account and get it back, but it's been neg-tagged already and I am sure you'd be asked by those who left the feedbacks to sign a message to confirm you're the real owner. Cause, who's to say the 'sale' wasn't just staged by hacker/'supposed buyer'.
He already sent the messages to admins, but still didn't receive any response.
He already did that
https://bitcointalk.org/index.php?topic=1808889.0 shorena also has confirm about his sign message and removed the neg trust.
Op, lock this thread because you already got your account back