You don't have to apologize to me. You have been tagged with negative feedback by DT user actmyname; I've dealt with them in the past and they are a very reasonable user. I'm assuming you were trying to sell the account you are currently on. If this is the case, I would suggest that you do not try to sell your account again. There are many users around here that do not like account sales, especially because of things that have happened in the past. There has been rampant abuse through the buying and selling of accounts so many users are on-edge about this kind of thing. They are trying to thwart scams, spam and things of that nature, which seem to correlate with account sales (or at least account farming) pretty decently.
I would say that you have a fairly decent chance of getting this negative trust removed if you remain on the straight and narrow for awhile and don't bother them about it for a good long while. Negative trust will not affect you much, if at all, at this stage in your account. You will not be able to sell the account (most likely) and you will not be able to join any reputable signature campaign. Aside from this, the negative affects would be minimal aside from being barred from asking for a loan (because it would be assumed that you are trying to sell your account through acquiring a loan) and certain members will be uninterested in transacting business with you.
A lot of people would simply say "Create a new account", but I would personally be much more impressed if you stick with this account, learn your lessons and become a better user because of it.
If you were selling your account because you are leaving the forum, then just consider that negative trust as a "Goodbye & Good-riddance!" What happens next is exclusively on your shoulders.