What you are telling is correct but this is not a big crime that it cannot be forgiven, Even you can see that other DT members have given me neutral after seeing my post record. Negative trust is what it is to control the spam and it is not that it should be permanent ban. I know that rules but even their is not strict rules that you cannot sell account. Even i support that it should not be encouraged as it is giving support to more scams.
That is why that i think that i should atleast get one chance to prove my innocence and get one chance to reconsider about this TAG.
If you read the Neutrals left, there is some doubt as to the honesty of the buying/selling of this account. Buying selling accounts is looked upon as seriously shady, (especially a high ranking account), because YOU did not rank up that account nor earn any Positive feedback that was left, same as using a fake ID.
They are within their rights to leave you a Negative. If they decide not to change or remove them, there is nothing you can do.