After disputing a debt to Southern Collection System that has remained on my credit report for almost 2 years after my bankrupcy was discharged, I received a letter from Southern Collection System stating that I had " failed to dispute the validity '' and had not made arrangements to pay. They demanded that full payment be made within 10 days. Although I do not have prior documentation, this is the 2nd time I have attempted to dispute this debt and have it removed from active collections in the past 2 years.