It looks like bassguitarman was recently added to Tomatocage's trust list which is what caused you to have negative trust by default.
The fact that an account was sold is not a reason to remove negative trust. You will need to try to work out the negative trust with bassguitarman and if necessary contact TC, however TC is unlikely to remove him if the rating is accurate.
Dear Quickseller,
I sincerely thanks for your help !
Also thanks to you that I know the most important information to solve my problem. Thanks to you that I know need to contact to @bassguitarman to
get his help, and now my account is back to normal. If not for your guidance maybe I do not know where to start .
Once again, Sincerely thanks !
Best regards,