Career Destroyer

I paid up/settled my Truworths account after dealing with their MBD Attorneys but my closed account it but it still appears open and in a default state. They also don't want to give me my paid up letter. I got a job and my prospective employer needs my paid up letter because I told them I have settled this account, so I’m suffering . I have been unemployed and have managed to secure employment now I look highly dishonest. I cannot get a job with outstanding debt.